5x-12=0
    2x^3+5x^2-12=0
    1.35*(2606.5*(4.54-x/0.7)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*1000*0.45)=2453/1000000
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*1000*0.45)=2453/1000000
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*0.45)=2453
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*450)=2453
    X+x×2.75%×3=97,425
    X+x×2.75%×3等于97425
    x^2-14.2x+48=0
    （260*27*2-x）*0.9+32*27=12270.1
    171180=X+X*1.05+X*1.05*1.05
    （X-98）/X=35%
    y＝0.272÷0.44+6E-17
    y＝0.272÷0.2720.44+6E-17
    y＝0.272×0.44+6E-17
    x*0.85=2203366
    x*80%=2203366
    x*80%=1053793
    X*20%=1053793
    x*0.6%=4129.33

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