（2*x+0.466）*0.25+2*1.031*(x*(x+0.466))^0.5=1.2
    （22806.83-X/1.01*0.01)*1.12=273535.58-X
    （22806.83-X/1.01*0.01)*1.12=273525.58-X
    （22108.15-X/1.01*0.01)*1.12=273525.58-X
     X/(X+2*7200*2259)=4.5%
    X/(x+7200*2259)=4.5%
    6x²-169x+1014=0
    9%=（0.6*（1+4%））/x+4%
    9%=（0.6*（1+4%））/x+4%
    （1+4x）×（2+x）＝36
    x*2=6
    (ex-e-x)/2
    37.59+11.72y=29.574y+29.758
    {15+18.6(y+4)}×0.63-2×11.8×√0.63
    25+x＝32.2+147.9055-x
    x/(x-9)=4
    126x+55x=2085
    100-100e^(-3/x)=95
    100-100e^(-100/x)=95
    100-100e^(-100/x)=95

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