Answer
$\frac{4n^7}{3m^7}$
Work Step by Step
Reduce the coefficients and subtract the exponents of m and n.
$\frac{16m^{-5}n^4}{12m^2n^{-3}}=\frac{4}{3}m^{-5-2}n^{4-(-3)}$
Simplify.
$\frac{16m^{-5}n^4}{12m^2n^{-3}}=\frac{4}{3}m^{-7}n^7$
Make the exponents of m positive.
$\frac{16m^{-5}n^4}{12m^2n^{-3}}=\frac{4n^7}{3m^7}$
