Answer :

Add them to get 2x=-16, x=-8, substitute in either to get 4y=0, y=0.
ABLOSSOM267

Answer:

x=-8

y=0

Step-by-step explanation:

x+4y=-8

x-4y=-8

2x=-16

2

x=-8

-8+4y=-8

+8        +8

4y=0

4

y=0

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