Find the solution of this system of equations.
4x + 4y = -16
-8x - 6y = -20
show work

I'm going to use the substitution method.

4x + 4y = -16
-8x - 6y = -20

4x + 4y = -16
- 4x - 4x

4y = -4x - 16

4 4 4

y = -x - 4

-8x - 6(-x - 4) = -20
-8x + 6x + 24 = -20
-2x + 24 = -20
- 24 - 24

-2x = 44

2 2

x = 22

4(22) + 4y = -16
88 + 4y = -16
- 88 - 88

4y = -104

4 4

y = -26

The answer is (22, -26).

The expressions would be 0.25a