Answer
$\frac{5}{3}$
Work Step by Step
$\frac{5r-20}{3r-12}=\frac{5(r-4)}{3(r-4)}=\frac{5}{3}\times\frac{(r-4)}{(r-4)}=\frac{5}{3}\times1=\frac{5}{3}$
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