10≥-x
    4x-4x+10≥-x
     -12500 + x - ( 50000 + x ) * 12 % ≥5000
    3x-1＞2 x-1＜3
    3x-1＞2 x-1＜6
    54*x*(0.525-0.27*x)-54*0.000001>52.5
    x+8小于5
    x+8大于3
    -12324.5*x^2+576.975*x+54.0225>0
    -a^3+4a-1＞0
    b/2≧1
    1-a≧0
    -a≧-1
    n＾3＋6n＾2+n≤0
    n＾3＋6n＾2+5n≤6
    75-（X+0.18）≥0.135
    75-（X+0.18）≥0.1+0.035*1
    -2x≥3
    4x>x-7/2
    270≤1800-26(50-x)-35x≤300

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