Question

[16÷8+(4÷2+2×1)×2]-5

Answer 1

[16÷8+(4÷2+2×1)×2]-5 = 5

Answer 2

Resolvendo a conta entre parênteses:

(4:2+2.1) = (2+2) = 4

Resolvendo a conta entre colchetes:

[16/8+(4).2] = 2+4.2 = 2+8 = 10

Portanto:

[10]-5 = 10-5 = 5