x-45大于等于15-6x+6
    3x+4>x 5x-5<4x-2
    x-3<0 2(x+1)>x+3
    (x-3)/4-(4x-3)/2<6
    (3x-2)/5>(2x-1)/3
    (3x-2)/5>(2x-1)
    (2x-1)/3-(5x+1)/2<1
    （3x+8）-5（x-1）＜5
    6+(3x+3)>12-(2x+14)
    1-2(x+1)<4(1-3x)
    1+(x+1)/2>2-(x+7)/3
    (x+1)/2>(2x+2)/3-1
    x/3<1-(x-3)/6
    (x-2)/2<(7-x)/3
    2/3x-1>5-1/2x
    7x-63大于等于3x-60
    2-3y>0
     5+2y>3-y
    5x-5>8x-8
    3（x-2)-1>4

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