Question

Mn-pq+mq-pn/mn+pq+mq+pn сократите дробь

Answer 1

$frac{mn-pq+mq-pn}{mn+pq+mq+pn}= frac{(mn+mq)-(pq+pn)}{(mn+mq)+(pq+pn)}= frac{m(n+q)-p(n+q)}{m(n+q)+p(q+n)}= frac{(n+q)(m-p)}{(n+q)(m+p)}= \ = frac{m-p}{m+p}$