Question

Efetue
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
Faça cálculos

Answer 1

a) -[4 - (-5+6)] + [ -3 + (4 - 2)]

-[4 - 1] + [ -3 + 2]

- 3 + (-2)

-5

b) {[-6-2]+[-3-5]}+20

{-8+(-8)}+20

-16+20

4

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

45+{2-[13+5]-7}+8

45+{2-18-7}+8

45+{-16-7}+8

45-23+8

22+8

30