Question

1 a и б...................

Answer 1

Ответ:

$\frac{3a}{b} \times \frac{b}{6a} = \frac{3a \times b}{b \times 6a} = \frac{1}{2} \\ - \frac{2x}{3y} \times \frac{y}{6x} = - \frac{2x \times y}{3y \times 6x} = - \frac{1}{9y}$