-20.47x^3+31.096x^2-27.63x+30.393>0
    abs(x+1)-abs(x-3)＞-4
    abs(x+1)-abs(x-3)≥-4
    abs(x+3)+abs(2*x-3)≥3
    abs(x+1)+abs(2*x-3)≥3
    (-0.2396-23.56x)*(0.5042-46.61x)<1
    －13x＞78
    4x＋6＜18
    (x+1)/3+(x-5)/2≦7/6
    (x+1)/3+(x-5)≦7/6
    3(x＋1)≦5(x＋1)
    3x-7>3-x
    －5x+8＞2x-6
    －12500＋X－（50000＋X）×1%≥5000
    (x-7.9)/x>0.3
    1.1*25.174<14300*(0.124-0.5x)x
    x^2-0.248x+0.00352<0
    900×8+99a<780a
    10<5−3(2+2x)<40
    -2x-3≥4

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