Question

calcule as operaçoes de fraçoes 2/5+1/5= 15/7-2/7= 4/9+2/9=

Answer 1

$\frac{2+1}{5} = \frac{3}{5} =\ \textgreater \ \frac{15-2}{7} = \frac{13}{7} =\ \textgreater \ \frac{4+2}{9} = \frac{6}{9}$