# How do you simplify 5m^-3n^4 and write it using only positive exponents?

${x}^{\textcolor{red}{a}} = \frac{1}{x} ^ \textcolor{red}{- a}$
$5 {m}^{\textcolor{red}{- 3}} {n}^{4} = \frac{5 {n}^{4}}{m} ^ \textcolor{red}{- - 3} = \frac{5 {n}^{4}}{m} ^ 3$