2x-3≤-6
    2x-3≥6
    ｛3x-7≥5:6-x＞8
    4x²-20x+9＜0
    abs(x/(x+1))>x/(x+1)
    abs(1-2x)<=7
    x^(-0.5)
    x^(-0.5)>x*4000^(-1.5)
    x^(0.5)>x*4000^(-1.5)
    x^0.5>x*4000^(-1.5)
    x^0.5>x*4000^(-1)
    abs（x+1）+abs（x-4）＞7
    abs（1-2x）＞3
    abs（x+3）＜4
    abs（2x-3）＜3x-2
    x*x*x+3x-5>0
    x*x+3x-5>0
    （4-x）/（x²+x+1）≤-1
    （x-1）/（x²-4x+5）＞1
    3x+3>3

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