Question

5)calcule
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

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)

1/4 - 1/8

2/8 - 1/8 = 1/8


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

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

1/6 - 2/30

5/30 - 2/30 = 3/30 *simplifica* 1/10

Answer 2

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

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

C) (1/2 - 1/3) - (1/6 - 1/10)
1/6 - 1/15
= 1/10