Respostas

2013-11-25T19:45:27-02:00
X*2+5 = 35
x*2 = 35 - 5
x= 30/2
x= 15
sonia tem 15 anos
2013-11-25T19:45:43-02:00
 2x + 5 = 35
2x = 35 - 5
x = 30/2
x = 15