4x+(4-x)²=10
    x²-4x+6=0
    6/(1.8+x)=x/(x-0.6)
    80X=60X+480
    11X+7=13X-9
    x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1=9.2727
    4.4998+（X*0.0257）=X
    x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1=7.2727
    x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1=0.72
    x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x=0.72
    6.3610+（X*0.0257）=X
    6.1268+（X*0.0257）=X
    （2X*X）+3X+1
    2.25%（1-x）^2=1.96%
    2.25%（1-x）^2
    9.6165+（X*0.0257）=X
    9.8634+（X*0.0257）=X
    13.3465+（X*0.0257）=X
    11.8524+（X*0.0257）=X
    12.5927+（X*0.0257）=X

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