2x-1/4≤3x+2/2
    3x+3>3
    3x+3>3
    -0.002*X²+0.12*X+0.709＞0.91
    -0.003X²+0.143X+0.574＞0.91
    0.265x+0.719＞1
    0.383x+0.834＞1
    0.505x+0.872＞1
    0.472x+0.527＞1
    0.284x+0.562＞1
    0.265x+0.664＞1
    a^2+5a+5>0
    a^3+5a^2+5a>0
    a^3+5a^2+5a>0
    16≥6x
    6-3/2t<3
    6-3/25<3
    6-3/25<3>
    5/3z+5小于等于31
    (2x-1)/3-(5x+1)/2>=1

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