Jawapan

2014-08-27T22:24:53+08:00
2x + 5 ≥ -92x ≥ -9-5
2x ≥ -14
x ≥ -7

-x ≥ 2
x ≤ -2
2 3 2
2014-08-28T07:46:22+08:00
-x ≥ 2
= -x ≥ 2
= x ≤ -2

2x + 5 ≥ -9
= 2x ≥ -9 - 5
= 2x ≥ -14
= x ≥ -7
1 5 1