Question

Calcule o valor de cada expressão. a) (–8) + (+10) + (–15) + (–20) = b) {5 – [32 – (50 – 20)]} + |-4|= c) –2 – {5 – [3 – (–3 – 1)]} =

Answer 1

Resposta:

a) (–8) + (+10) + (–15) + (–20) = -33

b) {5 – [32 – (50 – 20)]} + |-4|= -1

c) –2 – {5 – [3 – (–3 – 1)]} = -6