Question

помогите пожл решить))))))

Answer 1

$\frac{a}{xy}+ \frac{a}{xu}= \frac{au+ay}{xyu}$

$\frac{m}{ab}- \frac{n}{ac} = \frac{mc-nb}{acb}$

$\frac{5x^2-y^2}{xy}- \frac{3x-2y}{y}= \frac{5x^2-y^2-3x^2+2xy}{xy}= \frac{2x^2-y^2+2xy}{xy}$