Question

Calcule, simplificando quando possível.

a) 2/3 . 3/7 b) 2/15. 5/10 c) 5/7: 10/14 d) 8/9 ∶ 16/18 e) 7/3 ∶ 14/3

50 points

Answer 1

Resposta:

a) 2/3 . 3/7 =

$\frac{2}{3} \times \frac{3}{7} = \frac{6 \div 3}{21 \div 3} = \frac{2}{7}$

b) 2/15. 5/10

$\frac{2}{15} \times \frac{5}{10} = \frac{10 \div 10}{150 \div 10} = \frac{1}{15}$

c) 5/7: 10/14

$\frac{5}{7} \div \frac{10}{14} = \frac{5}{7} \times \frac{14}{10} = \frac{70}{70} = 1$

d) 8/9 ∶ 16/18

$\frac{8}{ 9} \div \frac{16}{18} = \frac{8}{9} \times \frac{18}{16} = \frac{8 \times 2}{16} = \frac{16}{16} = 1$

e) 7/3 ∶ 14/3

$\frac{7}{3} \div \frac{14}{3 } = \frac{7}{3} \times \frac{3}{14} = \frac{21 \div \times }{42 \div 3} = \frac{7 \div 7}{14 \div 7} = \frac{1}{2}$

espero que isso ajude vc.