X＜10 X=10
    3x-2π>=5x+4
    3x-2√2>=5x+4
    (3x+5)/2-5>5/2-x
    (1+x)/3>=x-1
    4x+2>3x+1
    ln(-ex)＜10000000
    ln(-ex)≤10000000
    ln(-ex)＞-10000000
    ln(-ex)≥-10000000
    4x-4-9x+1＜24
    4x-4-9x-1＜24
    4（x-1）-3（3x-1）＜24
    54－6x≥8x+12
    (0.2x-1.2)/0.3-(0.12-0.1x)/0.05<=-4
    x×【80000-2000(x-25)】≥2000000
    （x-1）/0.5+(2x+1)/0.25>=8
    (25＋x)×【80000-2000×(x-25)】≥2000000
    （25＋x）×（130000-2000x）≥2000000
    3-(x-2)/2<=x/6

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