Jawabanmu

2014-02-25T12:02:33+07:00
 c) 2x-6 ≥ 8x +5
-11≥ 6x
-11/6 ≥ x  
  a) 6-2(y-3) ≤ 3(10-y)
   6 - 2y+6 ≤ 30-3y
   12-2y ≤ 30-3y
    y≤18