Question

>> Exercícios Complementares de Matemática <<

4- Desafio:

a) - [4 - (5 - 10 + 6)] + [-3 + (3 + 1 - 2)]=
b) {[(0 - 6) - (0 + 2)] + [(0 - 3) - (0 + 5)]} - (-20)=
c) 45 - {2 - [5 + 4 + (6 - 2) - (7 + 3 - 9) + 6] - 7} + 8=

Answer 1

a)

-[4-(11-10)]+[-3+2]

-[4-1]+(-1)

-3-1

-4

B)

{[-6-(+2)]+[-3-(+5)]+20

{[-6-2]+[-3-5]+20

[8+(-8)+20

[-8-8+20]

-16+20

+4

c)

45-{2-[5+4(6-2)-(7+3-9)+6]-7}+8

45-{2-[9+(4)-(1)+6]-7}+8

45-{2-[13-1+6]-7}+8

45-{2-18-7}+8

45-{2-25}+8

45-23+8

53-23