Answer
$3m$
Work Step by Step
Using the laws of exponents, the given expression, $
\dfrac{(3m)^4}{(3m)^4}
,$ simplifies to
\begin{array}{l}\require{cancel}
(3m)^{4-4}
\\\\=
(3m)^{0}
\\\\=
3m
.\end{array}
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