Jawabanmu

2014-01-26T19:58:22+07:00
A. 1/2x + 5 > 15
x + 10 >30
x > 20

b. 2-(4+x) ≥ -22
2 - 4 - x ≥ -22
-2 - x ≥ - 22
-x ≥ -22
x ≤ 22