Respostas

2014-06-05T11:11:08-03:00
Olá, Thayneo!

4x - 3 = 9
4x = 9 + 3
4x = 12
x = 12 / 4
x = 3
2014-06-05T11:11:49-03:00
4x -3 = 9
4x = 9+3
4x = 12
x = 12/4
x = 3