Question

Resolva as expressões numéricas:

a) (20 + 4) ÷ 2 - 6 x 2 =

b) 7 + 3 x 5 - (20 ÷ 2 + 3) =

c) 70 + 2 x (50 - 30 ) =​

Answer 1

Resposta:

a) 0

b)9

c)110

Explicação passo-a-passo:

a) (20 + 4) ÷ 2 - 6 × 2

24 ÷ 2 - 6 × 2

12 - 6 × 2

12 - 12 = 0

b) 7 + 3 × 5 - (20 ÷ 2 + 3)

7 + 3 × 5 - (10 + 3)

7 + 3 × 5 - 13

7 + 15 - 13

22 - 13 = 9

c) 70 + 2 × (50 - 30)

70 + 2 × 20

70 + 40 = 110