Question

By what number should
$\frac{5}{7}$
be divided to get
$\frac{ - 15}{56}$
​

Answer 1

$\frac{5}{7} \div \frac{ - 15}{56} \\ \frac{5}{7} \times \frac{56}{ - 15} \\ - \frac{8}{3}$

$\fbox{ -8/3is \: your \: answer}$