0＜-m-3-√m2+4m-5＜1
    26700+X－X*10%/12*3 ≥50000
    11x+4<15 12x-7>-25
    31.3+X-X*1.5%≥60
     x➗3.0625≧28
    (0.5n-1)/3<=9 (0.5n-1)/3>8
    m2-m<(999-1)/6
    m2-m<(999999999999999-1)/6
    m^2-(1-m)^2<9
    x+1/x-2≤0
    x+1/x-2≥0
    33×22＜57
    abs(2x-1)<-x
    abs(x-1)+abs(x+1)>6
    abs(x+3)+abs(x-2)<7
    abs(x+3)>abs(x-5)
    abs(x+3)>(x-5)
    0
    abs(1-3x)<=7
    abs(x-1)>4

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