Question

Anyone please solve these !!!

Serious and correct answers only.

with process and correct explanation. ​

Answer 1

Answer:

$({ \frac{1}{3} })^{ - 4} \\ = {3}^{4} \\ = 81$

$(\frac{6}{7})^{ - 2} \\ = ({ \frac{7}{6} )}^{2} \\ = \frac{49}{36}$