Respostas

2014-03-20T20:50:25-03:00
5x+2-4x+x=3x-4
5x-4x+x-3x=-4-2
-x=-6
x=-6
1 5 1
2014-03-20T20:54:05-03:00
5x + 2 - 4x + x = 3x - 4
5x - 4x + x - 3x = - 4 - 2
- x = -6
  x = -6
S = {-6}