Answer
$\frac{7s(t^{3})}{5}$
Work Step by Step
Recall the equation: $a^{-n}= \frac{1}{a^{n}}$. Thus, we put $t^{3}$ in the numerator of the fraction with a positive exponent. Thus, we find that the expression becomes:
$\frac{7s(t^{3})}{5}$
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