8x-8-1<2x
    8(x-8)-1<2x
    2-(x+5)<-2-2x
    2x+5<4x-2
    （5+2x)/3
    2(x-1)
    2(x-1)
    2407.82<18.4*10^3*[1.58*x*(1.193-x/2)+1.4*0.11*(1.1-0.11/2)]
    1+x<3(x-1)
    (3x-27)+6<2x+2-6
    6-(4x+2)>3-3x
    10-(4-6x)>5+5x
    x/6<6
    x<20x+14
    (x-2)^2(x+1)(x-1)>0
    x-2-20<20x-8
    3x+3-(4x-2)>6
    6-(3x-6)<2x+2
    (x-2)(x+1)(x-1)>0
    (x-2)(x+2)(x-1)>0

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