Well bro if u can't understand something so simple, I am sorry to say u really are dumb
@krstev29
2 жыл бұрын
Pov: The easist thing ive ever seen
@1017-y9x
2 жыл бұрын
Many years of algebra and i learn better on youtube shorts 😂
@martynas1819
2 жыл бұрын
And Americans still don’t understand 😂
@infinyer2323
Жыл бұрын
For real
@nuffroom863
Жыл бұрын
You can even do it in your head.
@Rapscallion-ug1kz
Жыл бұрын
@@martynas1819 as an american i could do substitution in my head in a matter of seconds. This stereotype is getting annoying💀
@vortex8711
2 жыл бұрын
Simpler idk how y'all didn't see this: 3x + y = 12 -2x + y = 4 It works because you can cancel the y's then your left with 1x = 8
@Z7youtube
2 жыл бұрын
right but that’s the elimination method, the question on the video required using the substitution method, and btw the y in your second equation should be minus, probably a typo
@gooloohabadubudu5838
2 жыл бұрын
exactly
@gooloohabadubudu5838
2 жыл бұрын
he complicated it more than it actually is
@Z7youtube
2 жыл бұрын
@@gooloohabadubudu5838 read my comment
@gooloohabadubudu5838
2 жыл бұрын
@@Z7youtube where
@raphaelhostiadi
7 ай бұрын
If you don’t understand, maybe this may help. Because y is equal to 4-2x (because you minus the 2x from both sides to find what y is equivalent to) The y from the first equation (4-2x) becomes the y in the next equation, 3x+y = 12. Therefore the equation becomes 3x+4-2x = 12 Then to find the x you must -4 from both sides Then you are left with 3x-2x = 12 And as 3x - 2x = 1x (which is just x), and 12 - 4 = 8 Then that means x = 8 (Btw I know I’m bad at explaining but I feel like people may be the same as me, not realising that because y=4x-2, it is the same y as in the next equation (3x-y=12) hoped this maybe helped 😊)
@shashankkothari8066
2 жыл бұрын
Note: This video is for kids. These things are easy for us but not for someone who is new to algebra.
@nokubongadlamini1248
Жыл бұрын
Not me rewatching the video until I understand what his doing 😭👍
Broo you get a reward for not knowing how to explain
@trying1407
2 жыл бұрын
This is just basic systems of equations how else did you want him to explain
@haxorusgti5649
2 жыл бұрын
@@devabrata2002 that's the elimination method, while he is required to use the substitution method.
@Z7youtube
2 жыл бұрын
@@haxorusgti5649 no, he did the substitution method not the elimination one..
@Z7youtube
2 жыл бұрын
what? you’re probably under 7th grade so it might be hard for you cuz it’s mostly thought in 9th grade so it’s fine dw, he explained it very simply, it doesn’t even need explanation you just make an equation with only one variable so you can solve for it that’s it
@haxorusgti5649
2 жыл бұрын
@@Z7youtube Someone said there was an easier method, which is elimination method. I simply said that he was required to use the substitution method. Anyways, they deleted the comment.
@BeeWithSunglasses
Жыл бұрын
You should be using elimination, not substitution, for this system of equations.
@muhammadghifari2379
2 жыл бұрын
you can just substract them right? 2x+y=4 3x+y=12 substract them with one another and you'll get -1x=-8 so x=8
@muhammadghifari2379
2 жыл бұрын
@Afnaan2701 oooh yeah i see
@NobitchesGOD
2 жыл бұрын
And then y=-12 right?
@NobitchesGOD
2 жыл бұрын
@Afnaan2701 thats why ppl hate school. Why force students to learn in a harder way?
@wuxy4169
2 жыл бұрын
I mean there's only a difference in one X in both equations, so X is answer2-answer1=8. Y then had to be (-12)
@isaacmillen8789
2 жыл бұрын
@@NobitchesGOD BC this is a very special case where elimination is easier, but in general, elimination can't be used
@EastCoastShorts
Жыл бұрын
Whenever someone mentions algebra, I think of my X and wonder Y.
@saginur4380
Жыл бұрын
Damn. Algebra said he hopes you find your X and geometry said that to find her you need to be an alpha. Also, please remember that if you two were divided it might be for a long time...
@jesusjhonruiz9465
2 жыл бұрын
For those who are confused about where did the y comes go, it was because he assumed that the value of y is -2x+4.
@thedinofella
9 ай бұрын
2x+y = 4 --- equation 1 3x+y = 12 --- equation 2 From equation 1, Y = 4-2x --- equation 3 Substitute equation 3 in equation 2 3x+ 4 - 2x = 12 4+x = 12 x = 12 - 4 x = 8
@jimkirbysevilla7389
2 жыл бұрын
for less writing we could write x+2x+y=12. Since 2x+y=4, so x+4=12, then x=8... ü
@ishanpup
Жыл бұрын
lol i really want to do elimination method for this its just perfect
@mrinmayee274
2 жыл бұрын
Another Quick one: (Eq.2) - (eq.1) _______________ +y-y gets cancelled And We are left directly with 3x-2x=12-4 Hence x=8
@kingstrong
Жыл бұрын
Hey I just wanted to say thank for making this video Im really big struggling in math lately I feel like I learned something new today I will be coming back to watch more of your videos you got a new fan now I’m new I been trying to pass my pre algebra class I’m in summer school I’m going to be senior next year
@mosesed
2 жыл бұрын
This is pretty simple but the elimination method in my opinion is faster. All you have to to is the following: For the first equation (you could also use the bottom one), switch all numbers before the equal sign to the opposite integer and all equations after the equations to the opposite integer:(___ ____ = - __ __) to (-___ -___= +__ - __) So we get -2x - y = -4 3x + y = 12 Know just solve -2x + 3x = 1x or just x Then the y's just cancel and are just y Then -4 + (-12)=8 Therfore, y=8 To solve for x, take either top or bottom equation and replace y with 8: 2x + 8 = 4 2x + 8 - 8 = 4-8 2x = -4 X = -4/2 (fraction) X= -2 All done on 📱
@shrankai7285
2 жыл бұрын
The question asked for substitution method
@EmeraldSnake-vh9ze
Жыл бұрын
I need to know this if I wanna fail cuz it will be a lesson to listen in class next time
@tr33plays9
Жыл бұрын
POV: I paid attention and it made no sense 😮
@giornogiovanna725
Жыл бұрын
Usually when you have this kind of systems in which one of the variables has the same coefficient in both equations (in this case y) you can just write the two equations in function of y and then equate the right side of the two equations so you gave 3x + 4 = 2x + 12 so you immediately find the x and consequently the y by simply replacing y with the found value in either of the equations. It is a bit faster but has limited applications.
@BeeWithSunglasses
Жыл бұрын
For this equation just use elimination by multiplying one of the sides by -1 first
@adityabhardwaj8730
2 жыл бұрын
Use elimination method
@explosivemayhem6266
2 жыл бұрын
You all commenting on this video seriously need to humble yourselves. This video was created to be instructional and educational, to inform the viewer of something. That is why he is taking a bit of time to solve the problem. So please diminish your massive egos.
@daphnegraham6017
2 жыл бұрын
Because he’s is not explaining it so that I can actually understand what he’s saying DUH 🙄
@explosivemayhem6266
2 жыл бұрын
@@daphnegraham6017 Lmfao.
@explosivemayhem6266
2 жыл бұрын
@@zeezeecupidz That's not what I was talking about, but okay.
@Batmanfun-ie4mw
Жыл бұрын
My school: you don’t learn aljabrah you learn 1+1 Me In chemistry: oh uh I am Fuc-
@yossyasmey8245
Жыл бұрын
guys he made it sound way more complicated than it actually is, there are better ways to explain this 😭
@justme2947
Жыл бұрын
This helpped me so much thanks
@mskitler42
Жыл бұрын
I understand it but it disappeared from my dumb brain in 1 mins 💀💀💀💀
@tbaeitu
2 жыл бұрын
1st graders: hi ur smart mr
@awesome6078
Жыл бұрын
The question ain’t hard, in Australia we learn it in yr 9, but the fact that they want u to use substitution can get annoying sometimes when you realise than elimination save you so much time!
@TheCreatorOfAllWorlds
2 жыл бұрын
His writing is so smooooooth 👍👍👍👍👍👍
@redred1194
2 жыл бұрын
I’m still confused
@krstev29
2 жыл бұрын
Bro you can't be confused at this if you are older than third grade.
@ßæt
2 жыл бұрын
@@krstev29 for some reason, I'm confused either
@hshersx
2 жыл бұрын
@@krstev29 if you stop learning math in 3rd grade you can be confused at this
@Z7youtube
2 жыл бұрын
in which grade you’re?
@imAbsolutelyStrange
2 жыл бұрын
@@hshersx I'm still confused sir. Could you explain again?
@elimhorn3308
2 жыл бұрын
I wish all math wasn't lumped into my algorithm all together. I'm a Precalc student currently in the trigonometry semester, so these are just too easy.
@nora22000
2 жыл бұрын
Then use this logic to find World Peace or the cure for cancer...😅
@Beadedbyjrr
2 жыл бұрын
I don’t listen in class and going into year 6 so this will really help
@yellow_flash813
2 жыл бұрын
Yall be doing this in 6th grade ? I was working with fractions in 6th grade 💀
@arainyday1257
Жыл бұрын
@@yellow_flash813 lol 💀
@marktown2985
Жыл бұрын
Subtract the 1st line from the 2nd line. 3x-2x leaves x; y-y is zero; 12-4 leaves 8, so: x=8
@SeraSophia646
Жыл бұрын
Bro is savage.. using Sharpies to do math equations.
@chong0098
Жыл бұрын
Me right now :😦😧😨😰😥😢😭😱😖🥺🗿
@toll4568
Жыл бұрын
Coming back when i learnt whatever he did
@ryuga528
2 жыл бұрын
Thanks man a lot
@benjamindutschmann3222
Жыл бұрын
Now the real question is what happens when you pull out the “subtract one line from the other” trick from SAT math in your algebra 1 class
@landy4497
Жыл бұрын
I mean, why not
@azabiphetamine
Жыл бұрын
How to get A: Do the work right _alright then_
@rashidrashidplayss
7 ай бұрын
Me in school and the teacher says we’re learning algebra me: A new Einstein has been born
@Avgustav
9 ай бұрын
This is correct, but in this exact equation you can subtract y from both sides to get 3x = 12 and 2x = 4, therefore you can either minus 12-4 or take away 2x from both sides so you get 8
@Ladylike_
Жыл бұрын
Is anyone here rn watching this short while on their way to take the B.E.S.T Algebra EOC today 😭
@aryamarker1012
Жыл бұрын
You can just use elimination by multiplying the top by negative and adding the equations together solving for x
@atbey262
Жыл бұрын
Theres a much easier way to do this that i like to use you can write 3x +y As x+2x+y then substitute the value of 2x+y directly from the 1st equation. However all problems cannot be solved easily with this method but for some cases its really handy
@andrewtate8792
Жыл бұрын
Its so much easier. On the first view you can see that if you substract both equations u can eliminate y imediately: 3x+y-(2x+y)=12-4 Then you get 3x-2x+y-y=8 So x=8 Then simply putting that into one equation: 8*8+y=4 y=-60
@blackxsamurai2099
Жыл бұрын
Graduated and I just figured this out
@argarem0113
Жыл бұрын
And if the system of the equations has like 3-4 variables (like x, y, z, w) then just use Gauss-elimination
@misho1869
2 жыл бұрын
If this question is a Concern what the hell are they even learning over there
@parthdhamija962
2 жыл бұрын
Lol
@genjorgen5413
2 жыл бұрын
I’m curios what grade you study this??? For me I already learn this at elementary 6
@misho1869
2 жыл бұрын
@@genjorgen5413 I have no idea how long ago it was 4 or 5th grade probably
@TrevA102
2 жыл бұрын
usually 6th grade but 7/8th if they are a bit slow
@prabhsaini1
2 жыл бұрын
with this teaching method, i can see why nobody understands
@storytimewithlina9613
9 ай бұрын
If 2x+y=4, 2x=4+y, x=4+x+y x=4+y+(4+x+y) x=4+y+(4+y+(4+x+y)) Etc etc Just felt like ssying that
@entertaineranimations
11 ай бұрын
i got more confused but anyway good way of teaching just somethings are not connecting
@Everything_in_everyone_was
Жыл бұрын
We have the system of equations: 2x + y = 4 ---(1) sooo easy darn easy 3x + y = 12 ---(2) We can use the substitution method to solve for x in this system of equations. From equation (1), we have y = 4 - 2x. Substituting this expression for y in equation (2), we get: 3x + (4 - 2x) = 12 Simplifying the left side, we get: x + 4 = 12 Subtracting 4 from both sides, we get: x = 8 Now, we can substitute this value of x in either equation (1) or (2) to find the value of y. Let's use equation (1): 2x + y = 4 Substituting x = 8, we get: 2(8) + y = 4 Simplifying the left side, we get: 16 + y = 4 Subtracting 16 from both sides, we get: y = -12 Therefore, the solution to the system of equations is x = 8 and y = -12.
@mohammedaithamd5919
8 ай бұрын
You can substitu 2x+y by4 then you have x+4=12 then x=8 so y=4-16=-12
@kenjiecanque2695
Жыл бұрын
It's pretty simple and basic it's X = 8 and Y = -12 i get somehow why some of the people get confused by this and other mathematical concept is because as they don't follow the patterns of idea or method solving these equation plus having the lack of courage and assumption creating an method for a solution based off their observation of the topic. (possibly most of the people on the situation in psychological matter)
@Apocalypse_10
11 ай бұрын
By brain ain’t braining after watching this
@PRIMEDITZ1880
11 ай бұрын
Me too man bro my school is soon and it's a long ahh quiz
@pussific2582
2 жыл бұрын
Me who literally solved it in the brain in the first 4 seconds
@lolsamet9225
Жыл бұрын
He complicated things way too much. 2x+y=4 3x+y=12 3x+y is one more x than 2x+y so x = 12-4=8 lol
@moixemi
Жыл бұрын
nigga u must be peter parker then
@akshaybrawlstars6333
Жыл бұрын
I am an Indian and I just said the answer seeing the question for 10 seconds!
@razvanstanescu337
Жыл бұрын
OR you could just do this! Since 3x-y=12 can also be worte as x+(2x-y)=12, then we can say that x+4=12 'cause we know that 2x-y=4. From here it is preety easy: x=12-4=8
@aritro2397
2 жыл бұрын
You kinda did it in a hard way
@krstev29
2 жыл бұрын
There is an easy way?
@MinecraftPlayer-tl5lx
Жыл бұрын
No he didnt the question saif it do with the substitution method lmao
@andytubehd8912
2 жыл бұрын
In that case, y is -12
@leonardowebster9962
2 жыл бұрын
Thx very much Allegra is very challenging
@elizabethgreen8157
11 ай бұрын
Some of us are some how dense when it comes to math. So please write every step instead of talking them out. Otherwise thank you for your help.
@jonnyc4241
2 жыл бұрын
But... It's never that easy. They will always, and needlessly make even this so much more harder and complicated and I'ma cry on the inside and pretend like I don't care on the outside... I'm just trying to help my nephew with his homework, what the fork.!?
@h2oant546
2 жыл бұрын
I have a graded homework assignment that's due tomorrow morning about this. And my algebra teacher always makes things more complicated than it actually is + the students in my algebra class are very loud. Even after reviewing notes and watching countless videos about this, I still don't know how to solve this.
@hqs1tlc796
Жыл бұрын
@@h2oant546 exactly i wish people explained in more simple terms 😕
@pianomastaaa9755
Жыл бұрын
It’s about applying knowledge apply basic skills to complicated questions
@pianomastaaa9755
Жыл бұрын
@@hqs1tlc796 there’s isn’t a way unfortunately. The simplest way is just looking at how people do it.
You could also just say that the upper equation is the lower one but +x and therefore x must be 12 - 4 = 8
@NateTokelo
Жыл бұрын
damn bro I got no clue of what I be looking at😅😂😂
@Notvarun404
2 жыл бұрын
Bro i did it in 6 seconds
@kevinstreeter6943
Жыл бұрын
You need to know more this this to get an A. A simpler way is to subtract the 1st equation from the 2nd equation. You quicky get x = 8.
@roblox70451
2 жыл бұрын
This is more of a logic puzzle that algebra
@aaronrashid2075
2 жыл бұрын
This has gotta be the worst equation to use substitution😂
@BeingaMan359
2 жыл бұрын
For a short , just solve those equation with the help of linear equation
@NFrealfanforever
Жыл бұрын
IM LOSSING ALL MY BRAIN CELLS FOR THIS *lol*
@Sg190th
Жыл бұрын
Could have just made y = on BOTH. Y = 4 - 2x Y = 12 - 3x 4 - 2x = 12 - 3x -2x = 8 - 3x X = 8 2(8) + y = 4 4 - 16 = y -12 = y
@rexisnox577
Жыл бұрын
True but there isn’t much point, smaller numbers are easier to work with ooga booga.
@87clits
2 жыл бұрын
Dyscalulia 🧠 here. I have no wtf this even is.
@aishahkim7698
2 жыл бұрын
Ify bruh 🙂
@Rookie1706
2 жыл бұрын
Literally the most basic part of algebra… a very helpful method indeed and used a lot in parts of algebra, but I don’t think knowing this will help you get an A in algebra. Besides, the teachers will likely teach you the substitution method close to the beginning of algebra so I don’t think this could help you at all if your teacher already is going to teach you this. Yet algebra is so easy that you will probably make an A either way.
@mbaa2z
8 ай бұрын
Great IQ. SUPEREXCELLENT
@Blablabla6994
2 жыл бұрын
The variable 'Y' in the both the equation is same i.e 1 so according to the indian algebra if any variable are same in both the equations and the both the variable are positive then we subtract both the equations
@Blablabla6994
2 жыл бұрын
And I've solved it by that way and my answers are correct
@wise_axolotl179
Жыл бұрын
In malaysia, the question is not like this but the question is 2 paragraph long
@Andrew-bw4ur
Жыл бұрын
You could've solved it with a lot easier method Multiply the first equation by -1 -2x-y=-4 Then add the two equations And you'll have x=8
@MinecraftPlayer-tl5lx
Жыл бұрын
The question said to solve it with substitution method are you blind??
@Zerv1ski
Жыл бұрын
Me totally not trying to subtract 12 by 4.
@KeNsHoRt47
Жыл бұрын
me who got the answer by elimination method:
@mgkillergamer
6 ай бұрын
You forgot to also find y y = 4 - 2x y = 4 - 2(8) y = 4 - 16 y -12 So its (8, -12)!!
@jordandyer2866
Жыл бұрын
2x+y= 4 [1] 3x+y=12 [2] we cld label the questions as [1] and [2] then we cld say [2] - [1] so it wld be like 12-4 which is 8 and 3x-2x=x so x=8
@jordandyer2866
Жыл бұрын
when i say [2] - [1] we minus values of question [1] from question [2]
@OmerKhalfalla-z8m
7 ай бұрын
I finally understand ❤❤
@axism_ivin1513
Жыл бұрын
My school made us solve for y to so we plugged in the solution in the easiest equation so it’s easier to solve 2(8)+y=4 then 16+y=4 subtract 16 and y=-12 so now make it a point (8,-12)
@unexpectediteminbaggingare8074
Жыл бұрын
why though? What grade is this, I could do this when I was 0. Bottom equation name as 1 Top equation as 2 equation 1 - equation 2. Solve for x. Plug in x for Y
@imbadatwot2298
2 жыл бұрын
I did that in like 6th grade wtf
@fellini_federico
2 жыл бұрын
callaolacra 😈
@slickvishesh9993
2 жыл бұрын
3rd 😑
@pandorin2348
2 жыл бұрын
@@slickvishesh9993 bru lmfao 1st grade summer school was when i was doing that.
@slickvishesh9993
2 жыл бұрын
@@pandorin2348 lol doesn't seem like it
@Nitsua_YT
2 жыл бұрын
Nah bro I did that before I was born
@noobynoob6856
Жыл бұрын
after staring for 3 minutes I think I understand so after solving for y as 4-2X by subtracting 2X from both sides of the equation he did 3x+4-2X with 4-2X representing y so it’s pretty much recreating 3x+y and after just subtracting 4 from each side he got x=8
@danieltatarinov4376
Жыл бұрын
Or you substitute the term 2x+y into X + 2x+ y and get X+4=12.
@Mysteriousindividualguy
5 ай бұрын
My brain isn't mathing 💀
@monikagandhi2922
2 жыл бұрын
Why are you doing subtraction in first time you can transfer 2x in RHS that's simple
@Bruce_Version_2
8 ай бұрын
My brain: (-_-;)
@my_versatile_world
Жыл бұрын
Now don't tell me that you guys learn this at 7th grade or above and still find it hard💀 I can do this in my mind in like a 5-10 sec-
@kimberlycarver4131
Жыл бұрын
That seems easy 😊
@JosephPiccio
Жыл бұрын
y= -2x + 4 and then 3x + -2x + 4 = 12. Solve for x. x + 4 = 12 then x = 8. Oh it's simple
@0Computer_Tech0
2 жыл бұрын
I don't want A, I am fine with A+. 😂😂
@pastelokami
2 жыл бұрын
Same plus my extra credit lol I'm surprisingly good at math, plus it's fun for me
@hellomeh
Жыл бұрын
@@pastelokami Really? Then solve this 3x² +5x -2 < (or) = 0
@pastelokami
Жыл бұрын
@@hellomeh sorry I haven't learnt that yet?
@hellomeh
Жыл бұрын
@@pastelokami Okay 🙂
@TheBacon2031
Жыл бұрын
@@pastelokami Stop the cap
@Chickensandwich00
11 ай бұрын
Came here because i have a C in algebra. I am even more confused
@cjhalal9668
2 жыл бұрын
U make it in hard way👁️👄👁️
@anuradhaw9148
Жыл бұрын
Thx bc I am soon taking a algebra test
@benmee7630
Жыл бұрын
Put it back into the equation. 3 x 8 + 4 it equals 28
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