2/3*((1-1/0.03)+(3/4+1/0.03)*(1/3*214.13/x*0.35805183739485175)^0.03)=7.611/x
    2/3*((1-1/0.06)+(3/4+1/0.06)*(1/3*215.7/x*0.35805183739485175)^0.06)=7.94/x
    8.3335X/(1-8.3335X)=0.3
    330x=13.8*2200*24.57
    1360.02*1000000=13.8*2200x*（1835-x/2
    330x=13.8*2200*113.91
    6149.33*1000000=13.8*2200x*（1835-x/2）
    330x=13.8*2200*114.72
    6191.37*1000000=13.8*2200x*（1835-x/2）
    1.6×0.85× X=1.865
    1.6 ×0.85× X=3.37
    10.3/300.4=（228.6-x）/x
    10.3/275.4=（228.6-x）/x
    2/(x+1)-3/(x-1)=6/(x^2-1)
    4/(x^2-2x)+x/(2-x)=-1
    (1-x)/(2-x)=0.1/(0.1x-0.2)-3
    (x+1)/(x-1)-4/(x^2-1)=1
    2x/(x+3)+1=7/(2x+6)
    3/(1-y)=y/(y-1)-2
    (2x-3)/(x+6)=1/3

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