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y = -2.5

-4x - 4y = 8

-4y = 8 - -4x

y = -2 - x

-4x - 4(-2 - x) = 8

x - (-1 -x) = 2

x + 1 + x = 2

2x = 2-1

2x = 1

x = 1/2

y = -2 - 1/2 = -2.5

x = .5

y = -2.5

PROOF:

-4(.5) - 4(-2.5) = 8

-2 - (-10) = 8

-2 + 10 = 8

8 = 8

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Q: Solve for y -4x-4y equals 8?
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