Question

Calcule os quocientes das divisoes:
A)(+2/3)÷(+10/21)
B) ( 1,5)÷(0,4)
C)6/7÷(3/2)
D)(+0,7)÷(5/4)
Tem como me ajudaaa é pra entregar hoje pfvr
Com explicação passo a passo

Answer 1

Resposta:

$\frac{ + 2}{3} \div \frac{ + 10}{21} = \frac{2}{3} \div \frac{10}{21} = \frac{2}{3} \times \frac{21}{10} = \frac{7}{5}$

$( 1.5)÷(0.4) = \frac{15}{10} \div \frac{4}{10} \\ = \frac{15}{10} \times \frac{10}{4} = \frac{15}{4}$

$\frac{6}{7} \div \frac{3}{2} = \frac{6}{7} \times \frac{2}{3} = \frac{4}{7}$

$0.7 \div \frac{5}{4} = \frac{7}{10} \div \frac{5}{4} \\ = \frac{7}{10} \times \frac{4}{5} = \frac{14}{25}$