Question 428159
4x + 8y = 16
-2x + 5y = 55
.
Multiply bottom equation by 2 then add both equations together:
4x + 8y = 16
-4x + 10y = 110
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18y = 126
y = 7
.
substitute above into top equation to find x:
4x + 8y = 16
4x + 8(7) = 16
4x + 56 = 16
4x = -40
x = -10