Question

help with substition?
3y − 2x = 11
y + 2x = 9

I know that I have to change the second equation to y = 9 - 2x and then put in into the first equation like 3 (9 - 2x) − 2x = 11

but i am stuck after what to do now.

Answer 1

distribute
--> 27 -6x -2x = 11

combine like terms
--> -8x = -16

...

Answer 2

sounds good

Answer 3

okay and then after i combine like terms, just divide both sides by -8?

Answer 4

Yes @chungerforever

Answer 5

Can you solve it now?

Answer 6

do i insert x = 2 into the second equation?

Answer 7

yep you have to because you have to fing y :)