Question

Efetue os cálculos a seguir:

a) 3/9 + 5/9

b) 10/7 – 4/7

c) 6/11 + 1/11

d) 7/15 – 4/15 + 2/15

e) 8/12 – 1/5

f) 1/4 + 2/3

Urgente!

Answer 1

Resposta:

A) 8/9 B) 6/7

C) 7/11 D) 5/15 = 1/5

E) 8 x 5 / 12 x 5 - 1 x 12 / 5 x 12 = 40/60 - 12/60 = 28/60 = 14/30 = 7/15

F) 1 x 3 / 4 x 3 + 2 x 4/ 3 x 4 = 3/12 + 8/12 = 11/12