Respostas

2014-05-01T13:42:49-03:00
2x + 3 = 6 - x
2x + x = 6 - 3
3x = 3

x =  \frac{3}{3}

x = 1
2014-05-01T13:43:51-03:00
2x + 3 = 6 - x
2x-x = 6 -3
x = 3