Question

b. [16 : 8 +(4: 2 + 2 × 1).2] - 5

Answer 1

[16:8+(4:2+2.1)²]-5

[2 + (2 + 2)²]-5

[2 + (4)²]-5

[2 + 16] - 5

18 - 5

=13

espero que dê certo, bons estudos!