Jawabanmu

2014-02-17T19:29:27+07:00
8-6a ≥ 4a-20
-6a-4a ≥ -20-8
-10a ≥ -28
a ≤ 28/10
a ≤ 14/5
2014-02-17T19:33:46+07:00
2(4-3a)≥4(a-5)
<=>8-6a≥4a-20
<=>-6a-4a≥-20-8
<=>-2a≥-12
<=>a≤6

Sorry ya kalo salah,,