Question

PLSSSS HELPPPPP!! AND I NEED TO SHOW THE WORK

Answer 1

For all answers: x = -17, y = -19, (-17,-19)

Explanation:

Substitution:

We plug x = y+2 into the second equation

`-2(y+2)+y=15\\-2y-4+y=15\\-y-4=15\\y=-19`

Plugging back into x = y+2 we get that x = -17

Elimination:

We move y to the other side in Equation 1 and then subtract y.

`x-y=2\\-2x+y=15\\-x=17\\x=-17\\y=-19`

Plugging X into x-y = 2 we get that y = -19

What method you prefer is up to you