Respostas

2014-03-26T18:57:09-03:00
Número = x
2x + 15 = 49
2x = 49 - 15
2x = 34
x = 34/2
x = 17
2014-03-26T18:58:28-03:00
2x + 15 = 49
2x = 49 - 15
2x = 34
x= 34/2
x = 17