Question

4)Observe o exemplo e efetue as multiplicações:

a)
$3\times \frac{2}{5}$

b)
$2\times \frac{6}{7}$

c)
$\frac{5}{9} \times 4$


d)
$\frac{1}{12} \times 5$


e)
$\frac{1}{8} \times 5$


f)
$\frac{6}{7} \times 3$



me ajuda é urgente!​

Answer 1

Resposta:

Explicação passo-a-passo:

$a) 3.\frac{2}{5} => \frac{3}{1} . \frac{2}{5} = \frac{6}{5}$

$b) 2.\frac{6}{7} => \frac{2}{1} . \frac{6}{7} = \frac{12}{7}$

$c) \frac{5}{9}.4 => \frac{5}{9} .\frac{4}{1} .= \frac{20}{9}$

$d) \frac{1}{12}.5 => \frac{1}{12} .\frac{5}{1} .= \frac{5}{12}$

$e) \frac{1}{8}.5 => \frac{1}{8} .\frac{5}{1} .= \frac{5}{8}$

$f) \frac{6}{7}.3 => \frac{6}{7} .\frac{7}{1} .= \frac{18}{7}$