√(x^2)
    （x-2）*27=391
    18*18-x=298
    （54-2x）/1.57+x+40＝50+x
    37%x=180
    （x-13）*8=8
     (2y-5)/2022 - 3 = (2y-5)*2022 + (2022*2022 - 4)
    0.8×X=7000+X
    2022*2022 + x = 4
    2304m^4-1792m^2+279=0
    24x+2x^2=108.5
    300*x=280+（159+1）x
    ln(3x)＝x
    1.131x^3-13.635x^2+30.594x-(29.267+155.156/223.2113558)*e^x=0
    3∧x-sinX
    1.38lnx =- 1.9386
    t^3-t^2+2t-1=0
    (54-2x)/1.285+40＝50+x
    (54-x)/1.285+40＝50+x
    48580=-8.314*298*(lnx-ln100)

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