X+X*9%=24640
    x^4+x^2-5775 = 0
    x^4+x^2-11025= 0
    （4000×12×0.9-70%×93X×6.37%）÷（30%×93X+5%×93X）
    24=(1687.537/（5.11564-lgx）)-230.17-(2396*(0.019-(0.622*0.2x/(101.3-0.2x)))/(1.01+1.88*((0.622*0.2x/(101.3-0.2x))
    x^4+x^2-2194 = 0
    x^4+x^2-1650 = 0
    ln0.536=174.2/8.314*（1/（34.8+273.15）-1/x）
    0.00003434*lnx-0.00003253ln(1-x)=0.00011006
    (1-1/(1+(0.17/x)^0.4))x-122 = 0
    (1-1/(1+(0.17/x)^0.4))x-123 = 0
    (1-1/(1+(0.17/x)^0.4))x-125 = 0
    (1-1/(1+(0.17/x)^0.4))x-120 = 0
    (1-1/(1+(0.17/x)^0.4))x-600 = 0
    (1-1/(1+(0.17/x)^0.4))x-800 = 0
    (1-1/(1+(0.17/x)^0.4))x-1000 = 0
    (1-1/(1+(0.17/x)^0.4))x-100 = 0
    20.952/（0.068-lnx）=25.547/（0.0739-ln（1-x））
    (1-1/(1+(0.17/x)^0.4))x-90 = 0
    1/321.35-（8.315/51598.701）*lnx=1/331.15-(8.315/33779.1384)*ln(1-x)

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