Jawabanmu

2014-01-21T18:20:59+07:00
2014-01-21T18:25:14+07:00
1. 1/2x + 5 > 15
 = 1/2x > 15 - 5
 = 1/2x > 10
 = x > 10 : 1/2
 = x > 10 kali 2/1
 = x > 20

2. 2 - (4 + x) > - 22
 = 2 - 4 - x > -22
 = -2 - x > -22
 = -x > -22 + 2
 = -x > -20
 = x < 20