Answer
$\frac{21}{50}$
Work Step by Step
$\frac{9}{25}+\frac{3}{50}=\frac{9\times2}{25\times2}+\frac{3}{50}=\frac{18}{50}+\frac{3}{50}=\frac{18+3}{50}=\frac{21}{50}$
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