Jawabanmu

2014-09-09T21:22:12+07:00
1. 3 - 2x < 4
   = -2x < 4-3
   = -2x < 1
   = x < -1/2

2.  x/2 + 5 > 9
   = x/2 > 9-5
   = x/2 > 4
   = x > 4x2
     = x > 8

3. x+5 < 1-9x
   = x + 9x < 1-5
   = 10x < -4
   = x < -4/10
   = x < -2/5
2 4 2