Simplify (a^-2b^-1)/(cd^-3)

$\frac{a^{- 2} b^{- 1}}{c d^{- 3}}$

Move $a^{- 2}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{b^{- 1}}{c d^{- 3} a^{2}}$

Move $b^{- 1}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{c d^{- 3} a^{2} b}$

Move $d^{- 3}$ to the numerator using the negative exponent rule $\frac{1}{b^{- n}} = b^{n}$ .

$\frac{d^{3}}{c a^{2} b}$