Solve for both systems: 2x + 5y = - 51 and - 2x - 2y = 24

- 2x - 2y = 24

- 2x - 2y+2y = 24+2y

-2x = 24+2y

-2x/2 = 24+2y/2

-1x=12+y

-1x/-1=12+y/-1

x=-12-y

2x + 5y = - 51

2(-12-y) + 5y = - 51

2(-12) (2)(-y) + 5y = - 51

-24-2y+5y=-51

-24+3y=-51

-24+3y+24=-51+24

3y=-27

3y/3=-27/3

x=-9

x=-12-y

x=-12-(-9)

x=-12+9=-3