Question

7) Resolva as adições: a) – 40 + ( + 40 ) = b) – 40 + ( - 40 ) = c) + 27 + ( - 27 ) = d) – 27 + ( + 27 ) = e) – 6 + ( - 6 ) = f) – 6 + ( + 6 ) =

Answer 1

Resposta:

Explicação passo-a-passo:

a) – 40 + ( + 40 ) =   0

b) – 40 + ( - 40 ) = -80

c) + 27 + ( - 27 ) =     0

d) – 27 + ( + 27 ) =   0

e) – 6 + ( - 6 ) =      -12

f) – 6 + ( + 6 ) =        0