(2x+1)/3<=(3x-3)/4+1
    x+3>2x
    5x-6>2x
    3x-5>2x-1
    ((40*n+193.44)*((n-4.86)^2))/6+575.26*n+283.9036-1.2*(258.32*n+449.3746+(((n^2)*(13.33*n+245.58069))/6))≥0
    ((40*n+193.44)*((n-4.86)^2))/6+575.26*n+283.9036-1.2*(258.32*n+449.43+((n^2)*(13.33*n+245.58069))/6)≥0
    2/5 a≤100-a 120(100-a)+80a≤9710
    m^3-3m-4≤0
    (30十40(10一x)0.6≤200
    3X∧2＋1＞0
    x*x<0
    x-1<2x+1
    3x-1>2x+3
    3x-1>2x+3 x-1<2x+1
    2x/7-0.5<(6x-5)/14
    -4m^{2}-6m-1>0
    x*18>x*2/3*12
    abs（1200x+4000/3-(1000sqrt(11)x)/5）/sqrt(x^2+1)>700
    50n＞12n＋2n^2-n+98
    n^2＋n-4042＞0

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