Question

(+3/5)-(+1/6)+(+2/4) tira os parenteses

Answer 1

$( \frac{3}{5} )-( \frac{1}{6} )+( \frac{2}{4} )= \\ \\= ( \frac{3}{5} )-( \frac{1}{6} )+( \frac{1}{2} )= \\ \\ = \frac{3\cdot6-1\cdot5+1\cdot15}{30} = \\ \\ = \frac{18-5+15}{30} = \\ \\ =\frac{28}{30} = \frac{14}{15}$