Question

calcule as seguintes operações com frações:
a)2/3 x 7/9
b)1/4 x 3/5
c)8/3 x 3/2
d)1/8 : 1/6
e)3/9 : 2/4
f)1/5 : 6/4​

Answer 1

Oie, tudo bom?

a)

= 2/3 . 7/9

= [2 . 7]/[3 . 9]

= 14/27

b)

= 1/4 . 3/5

= [1 . 3]/[4 . 5]

= 3/20

c)

= 8/3 . 3/2 simplifica por 3.

= 8 . 1/2 simplifica por 2.

= 4

d)

= 1/8 ÷ 1/6

= 1/8 . 6 simplifica por 2.

= 1/4 . 3

= 1/4 . 3/1

= [1 . 3]/[4 . 1]

= 3/4

e)

= 3/9 ÷ 2/4

= 3/9 . 4/2 reduz com 3.

= 1/3 . 4/2

= 1/3 . 2

= 1/3 . 2/1

= [1 . 2]/[3 . 1]

= 2/3

f)

= 1/5 ÷ 6/4

= 1/5 . 4/6 reduz com 2.

= 1/5 . 2/3

= [1 . 2]/[5 . 3]

= 2/15

Att. NLE Top Shotta

Answer 2

Explicação passo-a-passo:

$a) \frac{2}{3} \times \frac{7}{9} = \frac{14}{27}$

$b) \frac{1}{4} \times \frac{3}{5} = \frac{3}{20}$

$c) \frac{8}{3} \times \frac{3}{2} = \frac{24}{6} = 4$

$d) \frac{1}{8} \div \frac{1}{6} = \frac{1}{8} \times 6 = \frac{6}{8} = \frac{3}{4}$

$e) \frac{3}{9} \div \frac{2}{4} = \frac{3}{9} \times \frac{4}{2} = \frac{12}{18} = \frac{2}{3}$

$f) \frac{1}{5} \div \frac{6}{4} = \frac{1}{5} \times \frac{4}{6} = \frac{4}{30} = \frac{2}{15}$