Question

15. In the following system of equations, what does x equal?

-10x + 4y = -64
-10x - 8y = -112

Answer 1

-10x + 4y = -64

-10x - 8y = -112

-20 x + 8 y = -128
-10 x - 8 y = -112
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-30 x + 0 y = -232

x = 232/30 = 116/15