Question

Выполните действие :(x/x-1 -1) xy--y/x

Answer 1

$(\frac{x}{x-1} -1)*\frac{xy-y}{x} =\frac{x-(x-1)}{x-1} *\frac{y(x-1)}{x} =\frac{x-x+1}{x-1}* \frac{y(x-1)}{x} =\frac{1}{x-1} *\frac{y(x-1)}{x} =\frac{y}{x}$