Respostas

2014-03-18T16:51:29-03:00
[-10].3+5.(-3+4)=35
[-10].3+5.(+1)=35
[-10].3+5.1=35
10.3   + 5.1  =35
30   +   5   =35
35=35
1 5 1
2014-03-18T17:05:47-03:00
(-30)+(-15+20)=35
-30-15+20=35
25=35
25-35
-10
espero ter ajudado