Question

1. Resolva as seguintes expressões numéricas


a) – 9 + [ 13 + ( – 5 + 8 + 1 ) ] =

b) 23 – [ 5 – 11 – ( – 7 + 17 ) ] =

c) 34 – { 19 – [ 14 + ( – 9) – (7 – 4 ) ] – 3} =


d) 7 – { 12 + [ – 4 + (16 – 22) – (+ 6 – 14) ] + 1 } =

e) − 25 − ( − 26 + 32 ) + ( −24 − 15 ) + 10 =

Answer 1

Resposta:

a) 8

b) 39

c) 20

d) – 2

e) − 60

Explicação passo-a-passo:

a) – 9 + [ 13 + ( – 5 + 8 + 1 ) ] =

– 9 + [ 13 + 4] =

- 9 + 17 =

= 8

b) 23 – [ 5 – 11 – ( – 7 + 17 ) ] =

23 - [ - 6 - 10 ] =

23 - [-16] =

23 + 16 =

= 39

c) 34 – { 19 – [ 14 + ( – 9) – (7 – 4 ) ] – 3} =

34 - { 19 - [ 14 - 9 - 3 ] - 3 } =

34 - { 19 - 2 - 3 } =

34  - 14 =

= 20

d) 7 – { 12 + [ – 4 + (16 – 22) – (+ 6 – 14) ] + 1 } =

7 – { 12 + [ – 4 + (– 6) – (–6 ) ] + 1 } =

7 – { 12 + [ – 4 – 6 + 6 ) ] + 1 } =

7 – { 12 – 4 + 1 } =

7 – 9 =

= – 2

e) − 25 − ( − 26 + 32 ) + ( −24 − 15 ) + 10 =

− 25 − 6 − 39 + 10 =

= − 60