Respostas

2014-04-08T18:07:13-03:00
-[+4-(+5-10+6)]+[-3+(+3+1-2]
-[+4-(1)]+[-3+(2)]=
-[+4-1]+[-3+2]=
-[3]+[-1]=
-3-1=
-4

Espero ter ajudado......
2014-04-08T18:26:55-03:00
-[4-(5-10+6)]+[(-3+(3+1-2)]
-[4-(5-4)]+[-3+(4-2]
-[4-(1)]+[-3+(2)]
-[4-1]+[-3+2]
-4-1-3+2
5-1=-4