Question

Помогите пожалуйста :(​

Answer 1

$\frac{b^{7} }{m^{-9} }=b^{7}m^{9}$

Answer 2

$\frac{ {b}^{7} }{ {m}^{ - 9} } = {b}^{7} {m}^{ - ( - 9)} = {b}^{7} {m}^{ 9}$