Question

Marque apenas as alternativas verdadeiras: *
a) 34 – (–7) = 34 + 7= 41

b) (–10) + 15 = -10 + 15 = 5

c) (–20) – (+18) = 20 + 18= 38

d) 15 – (+5) = 15 – 5= 10

e) –30 – (–20) = 20 + 30= 50​

Answer 1

Resposta:

a) 34 – (–7) = 34 + 7= 41

b) (–10) + 15 = -10 + 15 = 5

d) 15 – (+5) = 15 – 5= 10

essas são as verdadeiras