Simplify (-3x)^-1

${(- 3 x)}^{- 1}$

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

$\frac{1}{- 3 x}$

Move the negative in front of the fraction.

$- \frac{1}{3 x}$

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