Question

Questão 1 - Calcule:
a) (+5) + + 7) =
b) (-9) + ( +6) =
c)(+8) - ( +9) =
d) (-17)-(-3) =​

Answer 1

Resposta:

a) (+5) + (+7) = 12

b) (–9) + ( +6) = -3

c) (+8) – ( +9) = -1

d) (–17) – (–3) = -14