Respostas

2014-02-11T19:36:50-02:00
17-15:2+5 = 2:7= 0,2857
(17-15):2+5 =6
20+(40-32+2):2 =25
(17-15):2+5
(2):2 + 5
1+5=6

20+(40-32+2):2
20+(10):2
20+5=25
2014-02-11T19:37:58-02:00