(x-3)x≥5
    2-5x/6<2x-3/2
    3x-4＞5x
    2-1/2x≤x十3
    2（1-2x）<3（2x-1）
    x+3<2x-6
    3x+2<-6
    3-x/2≤7
    3-x/2≥3
     -3x一2<6
     2x一4<-6
    x1^2-6*x1+4*x2-11<0 exp(x1-3)-x1*x2+3*x2-1<0
    7(x-1)<4x-1 6(2/3*x+1)>=2x
    x-3/2*(2x-1)<=4 1+3x>4x-2
    -4x≤12
    5-6/5x＜5 x＜6
    5-6/5x＜5
    -2/1x＜3
    x＾2-3x-lnx+e＾sinx-1＞0
    x＾2-2x-lnx+e＾sinx-1＞0

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