0.03x^2+1.0538x=223012.85
    0.003x^2-1.5038x=223012.85
    0.36033/x=1.015
    81+(x-2.08)^2=x^2
    x（250+x）=93755
    0.16951/x=1.015
    0.04466/x=1.015
    0.01015/x=1.015
    0.13398/x=1.015
    x（㏑x-2.0814）=0.075955
    1.40679/x=1.015
    466.9/x=1.015
    446.9/x=1.015
    43.645/x=1.015
    15/16－x=5/8
    -x^2+1.5038x=223012.85
    x^2+1.0538x=223012.85
    2x=3/4
    10000÷x+30000÷（x+50）=150
    10000÷x+20000÷（x+50）=150

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