Respostas

2014-02-13T17:02:22-02:00
A=x-y/xy
A=2-1/2/5.1/2
2-1/2/10
2-1.10/2
2-10/2

4-10/2
-6/2
-3 =A
4-10/2
-6/2
-3
Ahhh valeu agora entendi :)
MGN