Respostas

2014-02-11T20:44:42-02:00
45-[12-4+(2+1)]
45-[12-4+3]
45-11=34

4 3 4
2014-02-11T20:45:08-02:00
45-[12-4+(2+1)]
45 - [12 - 4 + ( 3)] 
45 - [ 12 - 4 + 3]
45 - 12 + 4 - 3
49 - 15
34

3 3 3