Question

упростите выражение плиз

Answer 1

$(\frac{x-y}{x}- \frac{y-x}{y}): \frac{x+y}{xy}= \frac{(x-y)y-(y-x)x}{xy}* \frac{xy}{x+y}= \frac{xy-y^2-(xy-x^2)}{x+y}= \frac{(x-y)(x+y)}{x+y} \\= x-y$