[n^2*(1113.372+34.992n)]/6+10134.1+1769.671n≥10262.36+1727.676n+[n^2*(390+10.809n)]/5
    2（x+1）+（x-2）/3>=7/2x-1
    2x/3>x-6
    3-x>（7x-10）/5
    1<1/m-m+1
    （3x+2）/3<=（x+5）/2-1
    （1+x）/2<=（2x+1）/3
    （3-4）x<=4-3
    10x-3<1
    1/7(8-2x)-(3x-1)/5＜4
    （x^2-18x-40）/5（100-5x）≤0.8
    2+[3（y+1）/8]＜3-[（y-1）/4]
    （x^2-18x-40）/5≤0.8
    3-（x-2）/2＜（1/6）x
    x^2-18x-40≥240
     abs2x-2>6
    (1-3x)/2≤(2x+1)/5-1
    -5x＜-5
    12>(2+2+1.5+2+1.5+2+1.5+1.5+2)/(1+X%)
    12>(2+2+1.5+2+1.5+2+1.5+2)/(1+X%)

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