Respostas

2014-02-23T17:10:21-03:00
(x+2)/5 = 28/25
25(x+2) = 28.5
(x+2) = 28.5/25
(x+2) = 28/5
5(x+2) = 28
5x+10 = 28
5x = 28-10
5x = 18
x = 18/5
ou x = 3,6