Question

efetue os produtos (simplifique antes,se possivel)
2/3 : 10/12 : 1/15 =
4 : 7/3 : 6 =
1 : 3/5 : 10 =

Answer 1

$a) \: \frac{2}{3} \div \frac{10}{2} \div \frac{1}{15} = \frac{2}{3} \times \frac{2}{10} \times 15 = 2 \times \frac{1}{5} \times 5 = 2$
$b) \: 4 \div \frac{7}{ 3} \div 6 = 4 \times \frac{3}{7} \times \frac{1}{6 } = 4 \times \frac{1}{7} \times \frac{1}{2} = 2 \times \frac{1}{7} = \frac{2}{7}$