(x-1000-5000-2300)×0.35=4445
    X+(X*0.09) = 198.62
    X+(X*0.09) = 198.62
    √cos（π/4-3x)
    （1/50+1/45）×20+1/45X=1
    4X－25=3X+20
    arctan0.1w+arctan0.001w=90
    x^2+5x+25=0
    x+√3x=500
    50x×x+429x+117=0
    {4(x-1)=3x {5x+3/2=x
    X+(X*0.09) = 932.84
    x*0.09+x=188.184
    x*0.09+x=171876
    x^2+(-1.2x+7.4018)^2=20
    x^2+(-1.2x+13)^2=20
    3x-18=12-2x
    x*0.09+x=203091.98
    x-（2x/3+1/3）=1
    x-2x/3+1/3=1

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