Question

Evaluate
$( { \frac{7}{3} })^{ - 3} \times ({ \frac{9}{7} })^{ - 2} \times \frac{3}{7}$
(With formula) ​

Answer 1

Answer:

$( { \frac{7}{3} })^{ - 3} \times ({ \frac{9}{7} })^{ - 2} \times \frac{3}{7} \\ \\ = ( { \frac{3}{7} })^{3} \times ( { \frac{7}{9} })^{2} \times \frac{3}{7} \\ \\ = \frac{27}{343} \times \frac{49}{81} \times \frac{3}{7} \\ \\ = \frac{1}{49}$