Question

Mim ajudem por favor

Answer 1

Resposta:

Explicação passo-a-passo:

1) a) 1/3 + 3/3 = (1 + 3)/3 = 4/3.

b) 2/7 + 1 = 2/7 + 7/7 =  (2 + 7)/7 = 9/7.

c) 2/5 + 3/8 = 16/40 + 15/40 = (16 + 15)/40 = 31/40.

d) 2/6 + 3/6 = (2 + 3)/6 = 5/6.

2) a) 3/9 + 3/9 = 6/9 = 2.3/3.3 = 2/3.

b) 4/7 + 2/7 = 6/7.

c) 3/5 + 1/5 = 4/5.

d) 5/12 + 6/12 = 11/12.

e) 2/13 + 5/13 = 7/13.

f) 2/4 + 2/4 = 4/8 = 4/2.4 = 1/2.

3) a) 3/3 - 1/3 = (3 - 1)/3 = 2/3.

b) 1 - 2/7 = 7/7 - 2/7 = (7 - 2)/7 = 5/7.

c) 2/5 - 3/8 = 16/40 - 15/40 = (16 - 15)/40 = 1/40.

d) 3/6 - 2/6 = (3 - 2)/6 = 1/6.