Simplify $\left(5^{-1}\right)^{-3}$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $-1$ and $n$ equals $-3$

Applicare la formula: $x^ax^b$$=1$, dove $x^ax^b=5^{-3}\cdot 25^{-3}\cdot 5^{3}$, $a=-3$, $b=3$, $x=5$, $x^a=5^{-3}$ e $x^b=5^{3}$