x+2≤2/3(2x-1)
x+2≤4/3x-2/3
(1-4/3)x≤-2/3-2
-1/3x≤-8/3
x大于等于8
x+2≤(2/3)(2x-1)
两边同乘以3得:3(x+2)≤2(2x-1)
去括号得:3x+6≤4x-2
移项得:6+2≤4x-3x
化简得:x≥8
x+2≤(2/3)(2x-1)
3(x+2)≤2(2x-1)
2(2x-1)-3(x+2)≥0
x-8≥0
x≥8
x+2≤2(2x-1)/3;
x+2≤(4x-2)/3
3x+6≤4x-2;
x≥8
由题意知x≠1/2
2/3(2x-1)-x-2≥0
[2-3x(2x-1)-6(2x-1)]/3(2x-1)≥0
x-8≥0
x≥8