Question

How do you rewrite${(-7)}^{-1}$ without the exponent?

Answer 1

Rewrite the expression:

The exponent rule of real number states that $a^{-b}=\frac{1}{a^b}$.

So we can write the given expression as ${\left(-7\right)}^{-1}=\frac{1}{{(-7)}^1}$.

Since power $1$ gives the same number we can further write it as :

$\frac{1}{-7}$

Hence, $\frac{1}{-7}$ is the required result.