Question

QUESTÃO 8- Efetue as multiplicações e divisões>
a) 1/2 x 8/8 =
b) 4/7 x 2/5 =
c) 7/8: 4/7 =​

Answer 1

Olá!

Questão a)

$\dfrac{1}{2} \cdot \dfrac{8}{8} ~~=~~ \dfrac{8}{16} ~~=~~\boxed{ \dfrac{1}{2} }$

Questão b)

$\dfrac{4}{7} \cdot \dfrac{2}{5} ~~=~~\boxed{ \dfrac{8}{35} }$

Questão c)

$\dfrac{7}{8} ~:~\dfrac{4}{7} ~~=~~ \dfrac{7}{8}\cdot\dfrac{7}{4} ~~=~~\boxed{ \dfrac{49}{32} }$

:)

Answer 2

Resposta:

$a)~\frac{1}{2} .\frac{8}{8} =\frac{8}{16} =\frac{1}{2} \\ \\ b)~ \frac{4}{7} .\frac{2}{5} =\frac{8}{35}\\ \\ c)~\frac{7}{8} :\frac{4}{7}= \frac{7}{8} .\frac{7}{4} =\frac{49}{32}$