Answer
$\frac{31}{t}$
Work Step by Step
$\frac{8}{t}+\frac{7}{3t}=\frac{8\times3}{t\times3}+\frac{7}{3t}=\frac{24}{3t}+\frac{7}{3t}=\frac{24+7}{3t}=\frac{31}{t}$
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