# How do you simplify (p^4t^-2)/(r^-5)?

Recall that a negative exponent simply flips the position of a term, so $\frac{1}{x} ^ - 2 = {x}^{+ 2} / 1$
So $\frac{{p}^{4} {t}^{-} 2}{r} ^ - 5$ becomes $\frac{{p}^{4} {r}^{5}}{t} ^ 2$