Write 7^(-3) as a fraction

Question

Write
`7^(-3)` as a fraction

Answer 1

`(1)/(343)`

Explanation:

Using the rule of exponents

`a^(-m)` ⇔
`(1)/(a^(m) )` , then

`7^(-3)`

=
`(1)/(7^(3) )` =
`(1)/(343)`