Question

Which method would be easiest way to solve this equation:

x+2y=-5
-x+y=-4

*and can you answer it, thanks!

Answer 1

simply add them together

Answer 2

once you add them you get:

3y=-9, now to solve for y divide both sides by 3 and you get y=-3

Answer 3

and that method is called elimination method

Answer 4

now substitute -3 into the first equation x+2y=-5, like so x+2(-3)=-5

Answer 5

now solve x+2(-3)=-5 for x

Answer 6

x = 1

Answer 7

your correct

Answer 8

thanks for your help!