Question
Simplify:$\frac{3}{10}+\frac{7}{15}+\frac{3}{5}$

Answer

Given: $\frac{3}{10}+\frac{7}{15}+\frac{3}{5}$$=\frac{3\times3}{10\times3}+\frac{7\times2}{15\times2}+\frac{3\times6}{5\times6}$ $($because $LCM$ of $10, 15$ and $5$ is $30)$
$=\frac{9}{30}+\frac{14}{30}+\frac{18}{30}$
$=\frac{9+14+18}{30}$
$=\frac{41}{30}$

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