Question

$x - (x - y) - y - (y - x) + 3x - 4y$
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Answer 1

$x - x + y - y + y + x + 3x - 4y \\ x + y + 3x - 4y(cancelling \: x \: y) \\ 4x - 3y \\ \frac{x}{y} = \frac{3}{4}$

Answer 2

hope it will help you.

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