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    17.3X/365×93=0.16
    17.3(1+x)/365×93=0.16
    17.3(1+x%)/365×93=0.16
    41*X+39.4*X=643331
    8k^4+(16+2^3/2)k^2-32k-14=0
    8k^4+24k^2-32k-14=0
    88÷x=2
    x1000000x+10x=1
    x^2-x-1=0
    54464
    0.12X=0 (0.4x)*0.92+4000=0.55x
    0.12X=0 (0.4x)*0.92+4000=X*0.55
    0.12X=0 (X*0.4)*0.92+4000=X*0.55
    0.12X=0 0.12X=12
    0.12X=0 0.12X=-12
    0.12X=0 0.12X=0
    200×0.6x+100×0.3x+100×(-0.3x)=15000
    X-X÷1.03×0.03- X÷1.03×0.03×0.07×50%- (X÷1.03×80%×30%-2000)=30000
    169*0.82*0.82*1/5*1*17+169*0.82*0.82*4/5*1/5*2*17+169*0.82*0.82*(1-1/5-4/5*1/5)*3*17
    169*0.82*0.82*36+169*0.82*0.17*108

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