4=㏒x
    4.8164799306236=㏒x
    X-0.25*X=4.5
    x/(18+x)=0.25
    x/(18+x)=0.25
    60=x*4.3553*1.1+5*0.5645
    0.9=(0.5)^(0.75/x)
    1.1719626168224=(1+x)＾10
    (8573+25+x)*(5.33112%+1.2%)=4x
    5=1.05＾x
    x/(2x-5)=1.3562071871080
    x/(2x-5)=㏒14/㏒7
    2*x^3=15
    12＾x=100
    2/3+2*y/1.2+5/2=8.00
    （x-104）/104=（x-100）/100-5%
    2=1.04＾x
    （40.221+x）1.55＝40.221+71.242-x
    （40.221+x）1.55＝40.221+72.242-x
    -21/5x25/14

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