Question

p-q/p*(p/p-q +p/q) решите Плейз! ​подробно

Answer 1

$\frac{p-q}{p}\cdot \left(\frac{p}{p-q} +\frac{p}{q}\right)=\frac{p-q}{p}\cdot\frac{p}{p-q} +\frac{p-q}{p}\cdot\frac{p}{q}=1+\frac{p-q}{q}=\frac{q+p-q}{q}=\frac{p}{q}$