1.3*0.95*0.9*(2.4/2.7)*(10.094-3.44)*30%
    1.3*0.95*0.9*(2.4/2.7)*(10.094-3.44)
    (0.1*19.8228*0.6705)/(1+0.1*0.6705)*((100-0.1438-0.0096)/100)*(1/(1+0.31*0.0096))+0.55/1.4
    (0.1*12.8807*1.5601)/(1+0.1*1.4501)*((100-0.1282-0.0104)/100)*(1/(1+0.31*0.0104))+1.43/1.4
    (0.1*21.3413*0.9922)/(1+0.1*0.9922)*((100-0.1136-0.0104)/100)*(1/(1+0.31*0.0104))+2.13/1.4
    x^2-9x-100=0
    x^2-9x-10=0
    15×450
    (4/11）^2+3/4*4/11
    4/11^2+3/4*4/11
    x2＾x=1
    2＾0.464
    4456*14+26808
    (5-2x)(4-2x)
    x*10%=586.7
    x+50*8*0.2%+x*1.5%+x*10%+(x+x*10%)=586.7
    (x+50*0.2%+x*1.5%+x*10%)+(x+x*10%)=586.7
    (x+400*0.2%+x*1.5%+x*10%)+(x+x*10%)=586.7
    x+400*0.2%+x*1.5%=156
    (x+1)＋2(x＋1)＋3(x＋1)＋4(x＋1)=5(x＋1)+6(x-1)

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