Answer
$\frac{20c-8d^{2}}{5d}$
Work Step by Step
$\frac{4c}{d}$-$\frac{8d}{5}$=
$\frac{4c*5}{d*5}$-$\frac{8d*d}{5*d}$=
$\frac{20c}{5d}$-$\frac{8d^{2}}{5d}$=$\frac{20c-8d^{2}}{5d}$
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