Answer
$\frac{23}{30}$
Work Step by Step
$\frac{3}{10}+\frac{7}{15}=\frac{3\times3}{10\times3}+\frac{7\times2}{15\times2}=\frac{9}{30}+\frac{14}{30}=\frac{9+14}{30}=\frac{23}{30}$
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