3x^-7x-20=0
    3x^2-7x-20=0
    8.3335*x/(1-8.3335x)=30%
    (5016.2-y)/y＝2.1%
    (4998.3-y)/y＝1.9%
    (5112.7-y)/y＝2.0%
    (5042.1-y)/y＝2.6%
    (2110.6-y)/y＝3.1%
    (2110.6.2-y)/y＝3.1%
    (2115.2-y)/y＝3.1%
    (544.1-y)/y＝6.9%
    (525.4-y)/y＝7.3%
    (543.7-y)/y＝7.5%
    (575.3-y)/y＝7.1%
    (575.3-y)/y＝7.1
    (575.3-y)＝7.1*y
    （9088+10+X）*（4.44417%+1.7%）=4X
    2x^10+6x^4-3=0
    2x^10+6x^4-5=0
    X×12+1.5%X=2768136

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