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    16x2-33x+1=0
    x=-3/5*1082-240
    -0.6x-240=-5/12x-500/12
    1/x+1/(x+1)+1/(x+2)=1/(x+10)
    1/(x+1)+1/(x+2)+1/(x)=1/(x+10)
    1/(x+1)+1/(x+2)+1/(x)=1/(x+10)
    8*x-x^4-16=0
    8*x-x^4-16=0
    83x-130=63x
    4.5422=((28.02*0.639(x+0.1))/(1+0.639(x+0.1))*((100-6.66-1.14)/100)*(1/(1+0.31*1.14)+((0.76(x+0.1))/(1.3*0.101325))
    5x∧2-32x-48=0
    5x*x-32x-48=0
    5x*x-32x-48=0
    3x^3+14x^2-4x+8=0
    6x=12
    43X+73X+73X×9
    1600=(75-x)*(30-x)
    x^2-2*x+ln(x)-1=0
    ln(x/1.66)=0.52843*(1-298.15/288.15)-28.1*ln(298.15/288.15)-14.677*(298.15/288.15-1)
    ln(x/1.66)=0.52843*(1-298.15/293.15)-28.1*ln(298.15/293.15)-14.677*(298.15/293.15-1)

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