Question

1calcule
D)10:15/7
E)1/8:2
F)4/3:3
G)5/8:2
H)7/10:14
Pvr preciso da resposta rápida é mt obg

Answer 1

d) $10 \div \frac{15}{7} = \frac{10}{1} \times \frac{7}{15} = \frac{70}{15} = \frac{14}{3}$

e) $\frac{1}{8} \div \frac{2}{1} = \frac{1}{8} \times \frac{1}{2} = \frac{1}{16}$

f) $\frac{4}{3} \div 3 = \frac{4}{3} \times \frac{1}{3} = \frac{4}{9}$

g) $\frac{5}{8} \div 2 = \frac{5}{8} \times \frac{1}{2} = \frac{5}{16}$

h) $\frac{7}{10} \div 14 = \frac{7}{10} \times \frac{1}{14} = \frac{7}{140 } = \frac{1}{20}$

Answer 2

Olá.
d) 10 ÷ 15/7 = deixe o 10 em forma de fração e inverta a 2ª multiplicando.
10/1 x 7/15 =  agora multiplique
70/15  ÷ 5
14/3
e) 1/8 ÷ 2
1/8 ÷2/1
1/8 × 1/2
1/16
f) 4/3 ÷ 3
4/3 ÷ 3/1
4/3 ×  1/3
4/9
g) 5/8 ÷ 2
 5/8 ÷ 2/1
5/8 × 1/2
5/16
h) 7/10 ÷ 14
7/10 ÷ 14/1
7/10 × 1/14
7/140 ÷ 7
1/20

Espero ter ajudado.