Question

сократить дробь
$\frac{4a}{2x-y}- \frac{b}{y-2x}$

Answer 1

$\frac{4a}{2x-y}- \frac{b}{y-2x}= \frac{4a}{2x-y}+ \frac{b}{2x-y}= \frac{4a+b}{2x-y}$