Question

3) Resolva as operações abaixo:
a) (–12) – (+3) – (–20) =
b) (+15) + (–1) + (–7) =
c) (+10) – (–20) =
d) (–12) + (–9) + (+1) =
e) (13 – 4) – 8 =
f) (20 – 3) + (7 + 5) =

Answer 1

Resposta:

a) -25

b) +8

c) +20

d) -20

e) +1

f) +29