Question

Resolva as seguintes operações e (simplifique o resultado quando possível)

a)1/3 + 1/5

b) 2/3 + 5/7

c) 4/21 + 2/15

d) 8/26 + 15/39

e) 3/21 - 2/49​

Answer 1

Resposta:

Diversas

Explicação passo-a-passo:

a) 1/3 + 1/5 = (3+5)/15 = 8/15

b) 2/3 + 5/7 = (14+15)/21 = 29/21

c) 4/21 + 2/15 = (20+14)/105 = 34/105

d) 8/26 + 15/39 = 4/13 + 15/39 = (12+15)/39 = 27/39

e) 3/21 - 2/49 = 1/7 - 2/49 = (7-2)/49 = 5/49

Answer 2

Olá!

A:
$\frac{1}{3} + \frac{1}{5} = \frac{5 + 3}{15} = \frac{8}{15}$
·
B)

$\frac{2}{3} + \frac{5}{7} = \frac{14 + 15}{21} = \frac{29}{21}$
·
C) 34/105

D) 27/39

E) 5/49