Question

1. Resolva
a) -8+6
b) +2+17
c) (-13) + (+9)
d) (+2)+(-7)
e) +12-7
f) 13+7
g) (+6) + (-7)
h) (+17) + (-11)
​

Answer 1

Resposta:

A) -8+6 = -2

B) +2+17 = 19

C) (-13) + (+9) = 4

D) (+2) + (-7) = -5

E) +12-7 = 5

F) 13+7 = 20

G) (+6) + (-7) = -1

H) (+17) + (-11) = 6