0.2*（1+x）^10=0.532
    x＋2.5x－72=733
    x＋2.5x－72
    151.3034=25.08333*（3-x）+51.66667*（3-2*x）
    151.3034=25.08333*（3-x）+90.9333
    151.3034=25.08333*（3-x）+51.66667*（3-2*x）
    151.92=25.08333*（2.8-x）+90.9333
    151.92=25.08333*（3-x）+90.9333
    151.3034=25.08333*（3-x）+90.9333
    3x+5x-2＝0
    (50-20)*x-(40+52)=112
    (50-20)*x-(40+52)
    (700-40000/(（3.1415926）*x^2))^2=2.33*(28*28+(1241.9/((3.1415926)*x^2))^2)
    2150000000=13.8×1600×（1164−X÷2）
    x×x÷6378137÷6378137+0.906267×0.906267×x×x÷6356752.31414÷6356752.31414=1
    x×x+0.9×0.9×x×x=1
    x×x+0.9×0.9÷x÷x=1
    （1+x）3＝1.157205
    3.01*x+6.03*713.170026+1.99*556.498398=1
    556.498398*(-2.06963455)+1.61578073*x=0.57807309

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