5x≤4x-1
    1+2x>3+x
    2x-（1+3x）/2<1
    x-4≤3/2（2x-1）
    （x+1）/6≥（x-1）/2
    X+X*9%=52.23
    X+X*9%=252.98
    X+X*9%=33.38
    X+X*9%=1152.83
    X+X*9%=1709.25
    X+X*9%=651.73
    X+X*9%=767.65
    X+X*9%=468.90
    X+X*9%=643.50
    X+X*9%=234.65
    X+X*9%=719.60
    X+X*9%=221.30
    X+X*9%=594.10
    X+X*9%=82.95
    X+X*9%=52.45

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