Question

Efetue os calculos, simplificando-os quando possível.
E)6/7.3.9/5

F) 8.5/4.2

Answer 1

$letra \: e) \: \frac{6}{7} \times 3 \times \frac{9}{5}$
$\frac{6 \times 3 \times 9}{7 \times 1 \times 5 } = \frac{162}{35} = 4.62$
$letra \: f) \frac{ \frac{8}{5} }{ \frac{4}{2} }$
$\frac{8 \times 2}{5 \times 4} = \frac{4}{5} = 0.8$