Question

3- Elimine os parênteses
e calcule
a) (+28)+(+17)
b) (-19) + (-11)
C)(+30) + (-13 ) =
d)(+22)+(-50) =
e)(-8) + (+26)​

Answer 1

Resposta:

a) 28 + 27 = +55

b) - 19 - 11 = - 30

c) +30 - 13 = +17

d) 22 - 50 = -28

e) -8 + 26 = +18