Resposta:
a) 8:2+[15-(4x2+1)] = 10
b) 9+[4+2x(6-4)+(2+5)]-8 = 16
c) 50+{10-2x[(6+4:2)-(10-3)]} = 58
d) 180:{10+2x[20-45:(13-2x5)]} = 3
Explicação passo-a-passo:
a) 8:2+[15-(4x2+1)] =
8 : 2 + [15 - 9] =
8 : 2 + 6 =
R: 10
b) 9+[4+2x(6-4)+(2+5)]-8 =
9 + 15 - 8 =
9 + 7 =
R: 16
c) 50+{10-2x[(6+4:2)-(10-3)]} =
50 + {10 - 2 x [8 - 7]} =
50 + {10 - 2} =
R: 58
d) 180:{10+2x[20-45:(13-2x5)]} =
180 : {10 +2 x [20 - 45 : 3]} =
180 : {10 +2 x 5} =
180 : 60 =
R: 3
