Question

Can someone please explain to me in detail how to do these types of equations.

for example find x and y if
2x - 3y = -2
4x - 2y = 12


I would be so grateful thanks!

Answer 1

There are different ways...Any way in particular?

Answer 2

Anyway in which you would think it will be easiest to understand so I can remember for exams lol

Answer 3

Okay, one sec:)

Answer 4

thank you!! :)

Answer 5

What you woulf need to do is first solve for one variable. Lets solve for Y! To do that look at X. You need to cancel the Xs out

Answer 6

How do you think you would do that?

Answer 7

You can multiply the whole equation buy a number to make the X variable opposite. For instance multiply the first whole equation by -2. and the Xs will cancel out making it easy to solve for Y. Then you just plug and chug!

Answer 8

An easiest way is called eliminationm
the idea is to multiply the equations by a number that can help us to eliminato one of the variables
for example what if I multiply the first equation by 2, and write it down.

Answer 9

and now if we substract those equations we can eliminate (cancel) X
as you can see we got -0 for the x
but we do have the other variable
does it make sense to you now?

Answer 10

I will draw it on the board, one sec.

Answer 11

it would be -2 @ⒶArchie☁✪ and you have to ADD

Answer 12

Well i guess maybe both would work idk....