Question

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

Answer 1

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