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 = 8

Step-by-step explanation:

-x-y=4

x+2y=4

Add these two equations together to eliminate x

-x-y=4

x+2y=4

y=8

Now we need to find x

x+2y =4

Substitute y in

x +2(8) =4

x+16 =4

Subtract 16 from each side

x+16-16 =4-16

x=-12

1. credits

2. dual - aspect

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the answer is c.

step-by-step explanation: