Simplify the expression. Use positive exponents only.
(
a
−
1
b
5
a
−
5
b
3
)
−
3
\displaystyle {\left(\frac{{{a}^{{-{{1}}}}{b}^{{5}}}}{{{a}^{{-{{5}}}}{b}^{{3}}}}\right)}^{{-{{3}}}}
(
a
−
5
b
3
a
−
1
b
5
)
−
3
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\displaystyle