Respostas

2013-12-11T00:36:10-02:00
A) -3 + 1 = -2
b) 6 + 1 = 7
c) -9 + 1 = -8
d) 21 + 1 = 22
2013-12-11T00:37:28-02:00
A) 3.(-1)+1= -3 + 1 = -2
b) 3.2 + 1= 7
c) 3.(-3)+1= -9+1= -8
d) 3.7 +1= 22