Question

a) (+3)+(-2)+(-5)
b) (-2)-(+1)-(+5)
c) (+4)+(-2)-(+3)
d) (+5)+(-3)-(-1)
e) (+4)+(-6)-(+7)-(-6)+(+7
f) (-3)-(-5)+(-6)+(+8)-(-4)
g) +(-3+8)-(-3+8)+(5-6)
h) -(-3-1)-(-6+4-1)-6-(-3+2)
i) 18-(-5-2-3)+20-(-6+8)-(-1-8+3)
j) -32-31-(-12+14+7)+(-5-6-9+3)-17

Answer 1

Resposta:

a) (+3)+(-2)+(-5)  = 3 - 2 - 5 = - 4

b) (-2)-(+1)-(+5)  = -2 - 1 - 5 = - 8

c) (+4)+(-2)-(+3)  = 4 - 2 - 3 = - 1

d) (+5)+(-3)-(-1)  = 5 - 3 + 1 = 3

e) (+4)+(-6)-(+7)-(-6)+(+7 ) =4 - 6 - 7 + 6 +7  = 4

f) (-3)-(-5)+(-6)+(+8)-(-4)  = -3 + 5 - 6 + 8 + 4 = 8

g) +(-3+8)-(-3+8)+(5-6)  = +(5)-(5)+(-1) = 5 - 5 - 1 = - 1

h) -(-3-1)-(-6+4-1)-6-(-3+2)  = -(-4)-(-3)-6-(-1) = 4 + 3 - 6 +1 = 2

i) 18-(-5-2-3)+20-(-6+8)-(-1-8+3)  = 18-(-10)+20-(+2)-(-6) = 18 + 10 + 20 - 2 + 6 = 52

j) -32-31-(-12+14+7)+(-5-6-9+3)-17 = -32-31-(9)+(-17)-17 = - 32- 31 - 9 - 17 - 17 = - 106