Respostas

2014-02-04T13:21:20-02:00
2 + 30 : 5 + (  9 x 6 - 4 ) : 5 - ( 40 : 10 + 3 )
2+6+(54-4):5-(4+3)
2+6+50:5-8
2+6+10-8
8+2
10.3
30