Question

simplify the following

Answer 1

${ - 7}^{ - 1} = \frac{1}{ - 7} \\ = \frac{ - 1}{7}$



${- 4}^{ - 1} \times {( \frac{ - 3}{5}) }^{ - 1} \\ \frac{ - 1}{4} \times \frac{ - 5}{3} \\ \frac{5}{12} ans$