Question

Помогите пожалуйста! Выполните деление.

Answer 1

$1) \frac{5x - 3}{2} \div \frac{3 - 5x}{7} = \frac{5x - 3}{2} \times \frac{7}{3 - 5x} = \frac{5x - 3}{2} \times ( - \frac{7}{5x - 3} ) = - \frac{7}{2}$
$2) \frac{9y - 2}{5} \div \frac{2 - 9y}{3} = \frac{9y - 2}{5} \times ( - \frac{3}{9y - 2} ) = - \frac{3}{5}$
$3) \frac{7 - x}{6} \div \frac{x - 7}{9} = - \frac{x - 7}{6} \times \frac{9}{x - 7} = - \frac{3}{2}$
$4) \frac{12 - ab}{5} \div \frac{ab - 12}{6} = - \frac{6}{5} = - 1 \frac{1}{5}$