Question

this is the pic of the question I gave you

Answer 1

${( \frac{5}{8}) }^{ - 7} \times {( \frac{8}{5}) }^{ - 5}$
$= {( \frac{8}{5}) }^{7} \times {( \frac{8}{5}) }^{ - 5}$
$= {( \frac{8}{5}) }^{2 } \\ = \frac{64}{25}$