Jawabanmu

2014-03-10T16:40:51+07:00
8-4x< x+5
8-5 < x+4x
3<5x
3/5 < x
x>3/5
1 5 1
2014-03-10T16:43:18+07:00
4(2-x) < x+5
penyelesaian:
8 - x        < x+ 5
8 - x - x   < x-x 5
8     -2x   < 5
8 - 8        < 5-8
   -2x       < -3
    x         > 1,5     

jadi jawabnya x > 1,5
4 3 4