Question

спростите уровнение

Answer 1

$\frac{m(m-n)}{m^2} * \frac{mn}{(m-n)^2} = \frac{n}{m-n}$

Answer 2

$\frac{(m(m-n))*mn}{m^2*(m-n)^2} = \frac{m^2n*(m-n)}{m^2*(m-n)(m-n)} = \frac{n}{m-n}$