Question

Resolva as expressões numéricas abaixo
a)27+9+(12×4-1)
b)3+12×6-4×5+12:6
c) (100:5+2×10):(8×10-15×4)
d)(2+[2+(3×10-4×5:2)-5×3]×3)




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Answer 1

a) 27 + 9 + (12 × 4 - 1) = 27 + 9 + (48 - 1) → 27 + 9 + 47 → 36 + 47 = 83

b) 3 + 12 × 6 - 4 × 5 + 12 ÷ 6 = 3 + 72 - 20 + 2 → 3 + 52 + 2 = 57

c) (100 ÷ 5 + 2 × 10) ÷ ( 8 × 10 - 15 × 4) = (20 + 20) ÷ (80 - 60) → 40 ÷ 20 = 2

d) (2 + [2 + (3 × 10 - 4 × 5 ÷ 2) - 5 × 3] × 3) = (2 + [2 + (30 - 20 ÷ 2) - 5 × 3] × 3) → (2 + [2 + (30 - 10) - 5 × 3] × 3) → (2 + [ 2 + 20 - 5 × 3] × 3) → (2 + [2 + 20 - 15] × 3) → (2 + [22 - 15] × 3) → (2 + 7 × 3) → (2 + 21) = 23

Espero ter ajudado!!!