Question

Resolva:


ME AJUDEM PFVR​

Answer 1

a)

$\frac{2}{7} + \frac{3}{7} = \frac{5}{7}$

b)

$\frac{3}{4} \times \frac{2}{5} = \frac{6}{20} \div 2 = \frac{3}{10}$

c)

$\frac{2}{4} \div \frac{5}{3} = \frac{2}{4} \times \frac{3}{5} = \frac{6}{20} \div 2 = \frac{3}{10}$

d)

$\frac{3}{8} \times 5 = \frac{15}{8}$

Espero ter ajudado.

@somentematematica

Answer 2

Resposta:

A) 5/7

B) 3/10

C) 3/10

D) 15/8

Explicação:

A)

$\frac{2}{7} + \frac{3}{7} = \frac{2 + 3}{7} = \frac{5}{7}$

B)

$\frac{3}{4} \times \frac{2}{5}= \frac{6}{20} \div 2 = \frac{3}{10}$

C)

$\frac{2}{4} \div \frac{5}{3} = \frac{2}{4} \times \frac{3}{5} = \frac{6}{20} \div 2 = \frac{3}{10}$

D)

$\frac{3}{8} \times 5 = \frac{3}{8} \times \frac{5}{1} = \frac{15}{8}$