Simplify (pq^-3r^-4)/(3y^-5)

$\frac{p q^{- 3} r^{- 4}}{3 y^{- 5}}$

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

$\frac{p r^{- 4}}{3 y^{- 5} q^{3}}$

Move $r^{- 4}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{p}{3 y^{- 5} q^{3} r^{4}}$

Move $y^{- 5}$ to the numerator using the negative exponent rule $\frac{1}{b^{- n}} = b^{n}$ .

$\frac{p y^{5}}{3 q^{3} r^{4}}$