Answer
$343$
Work Step by Step
Using $\dfrac{a^x}{a^y}=a^{x-y}$, then the expression, $
\dfrac{7^5}{7^2}
$, simplifies to
\begin{array}{l}\require{cancel}
7^{5-2}
\\\\=
7^{3}
\\\\=
343
.\end{array}
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