Jawabanmu

2013-12-08T19:32:05+07:00
3x+5  < 2x-1
3x-2x < -1-5
      x  < -6
2013-12-08T19:35:28+07:00
[3x+5]<[2x-1] = 3x-2x < -5-1
                    = x < -6