Question

Преоброзовать выражение ​

Answer 1

$\frac{7}{ax-ay} +\frac{8}{my-mx} =\frac{7}{a(x-y)} +\frac{8}{m(y-x)} =\frac{7}{a(x-y)} -\frac{8}{m(x-y)} =\frac{7m}{am(x-y)} -\frac{8a}{am(x-y)} =\\\\=\frac{7m-8a}{am(x-y)}$