Use addition to solve the linear system of equations. Include all of your work in your final answer. -x-y=4 x+2y=4

x=-12, y = 4

Step-by-step explanation:

-x-y=4

x+2y=4

Add the equations together to eliminate x

-x-y=4

x+2y=4

0x + y = 8

y = 8

Now find x

x + 2y = 4

x +2(8) = 4

x +16 = 4

x = 4-16

x = -12

answer:   c ?

step-by-step explanation:

the answer is b.

step-by-step explanation: