-10x^2+7x-4<0
    1296000≤14670x-8x²
    x^2+x<0
    x＋3＜8
    3n/(8n-4)>37499/100000
    3n/8n-4>37499/100000
    lnx≤-1/x
    0.0975X+0.1030*(7.507775-X)＜1.50459
    （1278+967x)*1.058573＜1033(1+x）+311
    （1278+967x)*1.0524＜1033(1+x）+311
    （1278+967x)*1.0647＜1033(1+x）+311
    （1278+967x)*1.0594＜1033(1+x）+311
    （1278+967x)*1.0629＜1033(1+x）+311
    （1278+967x)*1.073＜1033(1+x）+311
    （1278+967x)*1.055＜1033(1+x）+311
    4x-3>2x+1 x-2<=3x-1
    4x-3>2x+1
    35x+25×（15-x）≤465
    7x<60+x<8x
    4y≥-12

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