[(x-2) / 2] - 3x ≤ 4/3x - 1
soit
1/2x - 1 - 3x ≤ 4/3x - 1
1/2x - 3x - 4/3x ≤ -1 + 1
3/6x - 18/6x - 8/6x ≤ 0
-23/6x ≤ 0
x ≤ 0