(X+1)/2+(x-1)/3<1
    (x-2)/3-1>x+1
    6+2x>30-3x+6
    1+x/3>5-(x-2)/2
    2x>6-(x-3)
    x/3>1-(x-3)/6
    3x-6<4x-3
    [3(y+1)]/2-[5(y-1)]/4>-1
    (2x-1)/6>=1-(2x+1)/2
    4X+20>0
    -4X+20>0
    (x-1)/4>(2x+1)/3
    -4x+20＞0
    3x-1<3+x
    (x+4)/3<3-(3*x-1)/6
    (3*x-1)/5-(x-1)/2>=0
    -2089.863+769.2792n+n^2/3×(682.613+19.119n)×(2047.839+38.238n)/(1365.226+38.238n)-0.4×n^2×(231.616+4.766n)×(694.848+9.531n)/(463.232+9.531n)≥0
    3x-2（5-x）小于等于4（7x-1）+1
    ( 2 * ( 2.78 + x ) + 0.8 * 9 ) * ( 79.79 + 7.8 * x ) / ( 12.78 + x ) / 90 >1.5
    ( 2 * ( 1.6+ x ) + 0.8 * 9 ) * ( 72.69 + 7.8 * x ) / ( 11.6 + x ) / 90 >1.5

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