solve for y ; 2x-2y=20, 2x+4y=10

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1 Answer

2x - 2y = 20

-2y = -2x + 20

y = x - 10

.

2x + 4y = 10

4y = -2x + 10

y = (-1/2)x + 5/2
by Level 13 User (103k points)

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