Question

Me ajuda de novo por favor

Answer 1

Olá,

A) 25 + [7 + (8 - 4 ÷ 2) + 4] + 4

25 + [7 + (8 - 2) + 4] + 4

25 + [7 + 6 + 4] + 4

25 + [13 + 4) + 4] + 4

[25 + 17] + 4

42 + 4

46

B) 15 + [4 + (7 × 3 + 1)] - 3

15 + [4 + (21 + 1)] - 3

15 + [4 + 22] - 3

[15 + 26] - 3

41 - 3

38