Question

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Answer 1

Explicación paso a paso:

$\frac{2}{5}+\frac{4}{3}=\frac{26}{5}$

$\frac{5}{7}-\frac{3}{7}= \frac{2}{7}$

$\frac{5}{6}-\frac{3}{4}=\frac{1}{12}$

$\frac{2}{9}+\frac{4}{9}=\frac{2}{3}$