Question

Сократите дробь
mn-pk+mk-pn
--------------------
pk^2-pn^2

Answer 1

Ответ:

mn - pk + mk - pn / pk^2 - pn^2 = m - p / kp - np

Answer 2

Ответ:

$\frac{mn - pk + mk - pn}{pk {}^{2} - pn {}^{2} } = \frac{mn + mk - pk - pn}{p(k {}^{2} - n {}^{2} )} = \frac{m(n + k) - p(k + n)}{p(k - n)(k + n)} = \frac{(m - p)(k + n)}{p(k - n)(k + n)} = \frac{m - p}{p(k - n)} = \frac{m - p}{pk - pn}$