Evaluate (-9)^-1

${(- 9)}^{- 1}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{- 9}$

Step 2

Move the negative in front of the fraction.

$- \frac{1}{9}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$- \frac{1}{9}$

Decimal Form:

$- 0.\overline{1}$