Question

What is the answer of (x+y÷x-y)÷(y+x÷y-x)

Answer 1

Answer:

${ \tt{ \frac{( \frac{x + y}{x - y}) }{( \frac{y + x}{y - x}) } }} \\ \\ { \tt{ = \frac{x + y}{x - y} \times \frac{y - x}{y + x} }} \\ \\ { \tt{ = \frac{-(x- y)}{x - y} }}$

Answer: = -1