Question

A) 1/2 - (1/4 - 1/8) =

B) (1/2 - 1/4) -1/8 =

C) (1/2 - 1/3) - (1/6 - 1/10) =

Answer 1

Resposta:

a) 1/2 - (1/4 - 1/8) = 1/2 - (2/8 - 1/8) = 1/2 - 1/8 = 4/8 - 1/8 = 3/8

b) (1/2 - 1/4) - 1/8 = (2/4 -1/4) - 1/8 = 1/4 - 1/8 = 2/8 - 1/8 = 1/8

c) (1/2 - 1/3) - (1/6 - 1/10) = (3/6 - 2/6) - (10/60 - 6/60) = 1/6 - 4/60 = 10/60 - 4/60 = 6/60 = 1/10

Answer 2

Olá...

a)

1/2 - (1/4 - 1/8)

1/2 - (2 - 1/8)

1/2 - 1/8⇒mmc = 8

4 - 1/8

3/8

b)

(1/2 - 1/4) - 1/8  

(2 - 1/4) - 1/8

1/4 - 1/8 ⇒mmc = 8

2 - 1/8

1/8

c)

(1/2 - 1/3) - (1/6 - 1/10)

(3 - 2/6) - (5 - 3/30)

1/6 - 2/30

1/6 - 1/15⇒mmc = 30

5 - 2/30

3/30

Bons estudos.