Question

Calcule as expressões ​

Answer 1

Resposta:

$\sf \: a) \: \frac{3}{8} + \frac{2}{8} - \frac{1}{8} = \frac{4}{8} = \frac{1}{2}$

$\sf \: b) \frac{3}{9} + 5 \frac{3}{9} - 2 \frac{1}{9} = 3 \frac{5}{9}$