Respostas

2013-10-01T19:03:13-03:00
2x - 4 = x + 1
2x - x = 1 + 4
x = 5
6 4 6
2013-10-01T19:03:29-03:00
Numero: x
Dobro do numero: 2x
2x - 4 = x + 1
2x - x = 1 +4
x = 5
3 4 3