Question

а:(-7/5)=15/7:(-10)​

Answer 1

$\frac{a}{ \frac { - 7}{5} } = \frac{ \frac{15}{7} }{ - 10} \\ \frac{5a}{7} = \frac{3}{14} \\ 70a = 21 \\ a = \frac{3}{10}$