Question

04. utilizando a regra da divisão de Fração,
Calcule:
a) 1/3: 4/6
b) 8/7: 3/5
c) 1/2: 1/14
d) 4/21: 8/7
e) 20/30: 5/6
f) 4/75: 8/15
g) 4/3: 1/3
h) 11/4: 1/5​

Answer 1

Repete a primeira fração e multiplica pelo inverso da segunda:

$a) \frac{1}{3} \times \frac{6}{4} = \frac{6}{12} \div 6 = \frac{1}{6}$

$b) \frac{8}{7} \times \frac{5}{3} = \frac{40}{21}$

$c) \frac{1}{2} \times \frac{14}{1} = \frac{14}{2} = 7$

$d) \frac{4}{21} \times \frac{7}{8} = \frac{28}{168} \div 28 = \frac{1}{6}$

$e) \frac{20}{30} \times \frac{6}{5} = \frac{120}{150} \div 30 = \frac{4}{5}$

$f) \frac{4}{75} \times \frac{15}{8} = \frac{60}{600} \div 60 = \frac{1}{10}$

$g) \frac{4}{3} \times \frac{3}{1} = \frac{12}{3} = 4$

$h) \frac{11}{4} \times \frac{5}{1} = \frac{55}{4}$

Espero ter ajudado.

@batraquiomatematico