Respostas

2014-07-16T18:53:44-03:00
5+4=  9 + 3 =  12 
12-1 = 11 + 2 = 13 - 1 =  12 - 6 = 6 :)
2014-07-16T18:58:01-03:00
5+4=9  9+3=12 
12-1=11   11+2=13
13-1=12      12-6= 6