x-5>-6/x
    (413.33-429)*(480000+a)+(430-429)*480000-(429-270)*a<0
    4000>0.0025X
    4000÷X>0.0025
    6000/15>X/4000
    15/6000>4000/X
    m^2-6m+1＜0
    6x^2-25x-1>0
    3^n-1>5000
    abs(x+2)+abs(x-2)<=12
    sqrt(3－x)－1/2＞0
    ln(3x－1)＞1
    lnx≥0
    lnx＞0
    x+5x+25x+250x+2500x<=5600
    ((2/m)+2)((2/m+1)+2)≥(m+1)(m+2)
    (2/m+2)(2/m+1+2)≥(m+1)(m+2)
    382699783*0.1+0.1x
    x^3-4×x^2-4×x-1<0
    60x+24(100-x)≥3210

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