Respostas

2013-08-14T22:49:09-03:00
(-5-2)+(-5+2)+(5-2) = 
-7 - 3 +3 =
-7
resposta b
2013-08-14T23:00:14-03:00
(-5-2)+(-5+2)+(5-2)=
-7-3+3=
-7

b) -7