Respostas

2014-04-24T23:35:12-03:00
(-26) + (-24) + (49)=
(-50) + (49)=
-1
1 5 1
2014-04-24T23:38:57-03:00
2.(-13)+3.(-8)-7.(-7)=
26-24+49=
2+49=
51