Add.
$\frac{1}{3} + \frac{3}{4} + \frac{2}{5}$

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Solution

$\frac{1}{3} + \frac{3}{4} + \frac{2}{5}$

$= \frac{(4 \times 5) + (3 \times 3 \times 5) + (2 \times 3 \times 4)}{3 \times 4 \times 5}$

$= \frac{20 + 45 + 24}{60}$

$= \frac{89}{60}$

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