Question

calcula
$- \frac{5}4{ \div ( - \frac{7}{2?} ?) = }$
​

Answer 1

$- \frac{5}{4} \div ( - \frac{7}{2} ) = \frac{5}{4} \times \frac{2}{7} = \frac{5}{2} \times \frac{1}{7} = \frac{5}{14}$