（26.448+x）×2.15＝52.895+72.643-x
    （26.448+x）×1.75＝52.895+72.643-x
    （26.448+x）×1.95＝52.895+72.643-x
    （26.448+x）×1.55＝52.895+72.643-x
     1/29 = 2/X
    1/330=29/X
    2.8094=（（30.56*0.847（x+0.1））/（1+0.847（x+0.1））*（（100-8.28-1.4）/100）*（1/(1+0.31*1.4）+（（2.26（x+0.1））/（1.3*0.101325））
    0.341x+ln(x/0.0795)=0.25
    0.341x+ln(x/0.0795)
    759-899*（1-x）=67.01
    （26.448+x）×2.55＝52.895+72.143-x
    （26.448+x）×2.35＝52.895+72.143-x
    （26.448+x）×2.15＝52.895+72.143-x
    （26.448+x）×1.95＝52.895+72.143-x
    （26.448+x）×1.75＝52.895+72.143-x
    （26.448+x）×1.55＝52.895+72.143-x
    4500/(0.45x+0,2*(1-x))=15000
    20lg(1/(2x*sqrt(1-x^2)))=2.7
    x^2-14.4x+48.6=0
    （8%-X）/（-12.67-0）=（8%-6%）/（-12.67-10.49）

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