Answer
$\frac{75+6b^{2}}{5b}$
Work Step by Step
$\frac{15}{b}$+$\frac{6b}{5}$=
$\frac{15*5}{b*5}$+$\frac{6b*b}{5*b}$=
$\frac{75}{5b}$+$\frac{6b^{2}}{5b}$=$\frac{75+6b^{2}}{5b}$
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