Question

Calcule as seguintes expressões a) { [ ( 19 – 6 ) + ( 7 + 2) – 4 ] + 8 } – 12 =
b) 64 – { 21 – [ 30 – ( 9 + 5) + ( 6 – 5 +3)]} =
c) 6² + 2 4 - 3 x (4 + 7) =
d) 8² : 4 2 + 3 x 16 – 14 =

Answer 1

Resposta:

Explicação passo-a-passo:

a) { [ ( 19 – 6 ) + ( 7 + 2) – 4 ] + 8 } – 12 =

{ [ 13 + 9– 4 ] + 8 } – 12 =

{ [ 13 + 5] + 8 } – 12 =

{ 18 + 8 } – 12 =

26– 12 =

14

b) 64 – { 21 – [ 30 – ( 9 + 5) + ( 6 – 5 +3)]} =

64 – { 21 – [ 30 – 14 + 4]} =

64 – { 21 – [ 30 – 14 + 4]} =

64 – { 21 – [ 30 – 10]} =

64 – { 21 – 20} =

64 – 1 =

63

C) 6² + 2 4 - 3 x (4 + 7) =

6² + 2 4 - 3 x (11) =

36 + 2 4 - 33=

3+24

27

d) 8² : 4 2 + 3 x 16 – 14 =

64 : 4 2 + 48 – 14 =

64 : 4 2 + 34 =

32/21