Answer:
x = -1
y = 6
Explanation:
Equation (1) : -4x + 2y = 8
Equation (2) : 4x + 4y = 28
(1) + (2):
6y = 36
Sub y = 6 into (1):
-4x + 2(6) = 8
-4x + 12 = 8
-4x = -4
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