Question

solve the system using the elimination method
5x-y=-9
2x+y=2

Answer 1

solve this for x:
5x+2x-y+y=-9+2

Answer 2

So first you add the two equations together

Answer 3

ok

Answer 4

What do you get

Answer 5

7x=-7

Answer 6

x=-1

Answer 7

Nice. Now you plug the value for x (-1) back into one of the original equations, I would use the latter

Answer 8

plug it into both?

Answer 9

Just one will give you the answer, if you want to check then you plug it into the other one once you get the value for y

Answer 10

does y=4???

Answer 11

yes it does

Answer 12

ok! thanks

Answer 13

No problem