Question

4) Calcule o valor numérico da expressão abaixo: a) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 b) {[(8 · 4 + 3) ÷ 7 + (3 + 15 ÷ 5) · 3] · 2 – (19 – 7) ÷ 6} · 2 + 12 c) 12 + [35 - (10 + 2) +2] d) 3 – {2 + (11 – 15) – [5 + (-3 + 1)] + 8}

Answer 1

Resposta:

a) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6

[24÷8+5•3]÷6

[3+15]÷6

18÷6

3

b) {[(8 · 4 + 3) ÷ 7 + (3 + 15 ÷ 5) · 3] · 2 – (19 – 7) ÷ 6} · 2 + 12

{[35÷7+8•3]•2-12÷6}•2+12

{29•2-2}•2+12

56•2+12

124

c) 12 + [35 - (10 + 2) +2]

12+[35-12+2]

12+25

27

d) 3 – {2 + (11 – 15) – [5 + (-3 + 1)] + 8}

3-{2+(-4)-[5+(-2)]+8

3-{-2-3}+8

3+5+8

16