550/(x+110)-500/(x+100)=2.3
    550/x+110-500/x+100=2.3
    0.7896=-0.72x^2 + 1.6693x + 0.0247
    550/x+110-500/x+100=2.323
    0.8939=-0.72x^2 + 1.6693x + 0.0247
    x^2-2280x+159891=0
    18400x*(1140-x/2)=2942000000
    x*x-2280x=159891
    x*x-2280x=0.32
    21.44*x^2*(2*x/3+2.5)/1.5 = 1.47*(x+9)^2*(2*x/3-0.5)-405/2+90*x*(x/2+2.5)
    42.88*x^2*(2*x/3+2.5)/1.5=2.94*(x+9)^2*(2*x/3-0.5)-405/2+90*x*(x/2+2.5)
    500/(x+100)-564.25/(x+112.85)=2.323
    15.31x^3+75.68x^2-208.43x-2521.92=0
    564.25/(x+112.85)-500/(x+100)=2.323
    564.25/(x+112.85)-500/(x+100)
    X^3+13X^2-50X-56=0
    X^3+13X-50X-56=0
    15.31x^3+66.08x^2-119.63x-1697.38=0
    51.5=(0.109^2)/((x-0.218)^2)
    2x=1

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