Question

Calcule o valor das expressões:

a) 3/8 . (1/4 . 4/3 + 4/3)=

b) (1/3 + 1/4) : ( -5/2) + (-2/3) =

Answer 1

Oi...

Calcule o valor das expressões:

a)

3/8 × (1/4 × 4/3 + 4/3)

3/8 × (1/3 + 4/3)

3/8 × 5/3

1/8 × 5/1

5/8

b)

(1/3 + 1/4) : ( - 5/2) + (- 2/3)

(4 + 3/12) ÷ (- 5/2) + (- 2/3)

7/12 ÷ (- 5/2) - 2/3

- 7/12 × 2/5 - 2/3

- 7/6 × 1/5 - 2/3

- 7/30 - 2/3⇒mmc = 30

- (7 + 20)/30

- 27/30 ÷ 3

- 9/10

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