Multiply first equation by 2: 4x - 2y = 20
Subtract second equation: x = 12, so y = 14.
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2xy - 4x + 8y - 16 can be factored.(2xy - 4x) + (8y - 16)2x(y - 2) + 8(y - 2)Since y-2 is the same as the other, it would turn out like this:(2x + 8)(y - 2):]
24\3=8
-2
x + y = 10 y = x + 8 so, x + (x + 8) = 10 2x + 8 = 10 2x + 8 - 8 = 10 - 8 2x = 2 x = 1 and y = 9 because y = x + 8 y = 1 + 8 y = 9
7x + 8 = 10x - 2 ∴ 3x = 10 ∴ x = 10/3