Question

3-Resolva as expressões abaixo:

a) (+3) + (-2) + (-5) =
b) (-2)-(+1)– (+5) =
c) (+4) + (-2)-(+3) =
d) (+5)-(3-(-1) =
e) (+4) + (- 6)-(+7)- (- 6) +(+7) =
f) (-31-(-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) -32-1-(-12+14+7) + (-5-6-9+3) - 17 =

me ajudemm pfvv​

Answer 1

Resposta:

a)

$+ 3 - 2 - 5 = - 4$

b)

$- 2 - 1 - 5 = - 8$

c)

$+ 4 - 2 - 3 = - 1$

d)

$5 - 3 + 1 = 3$

e)

$+ 4 - 6 - 7 + 6 + 7 = 4$

f)

$- 31 + 5 - 6 + 8 + 4 = - 31 + 11 = - 20$

g)

$+ 11 - 5 - 1 = 5$

h)

$+ 4 + 3 - 6 + 1 = 2$

i)

$18 + 10 + 20 - 2 + 6 = 52$

l)

$- 32 - 1 - 9 - 17 - 17 = - 76$