5x+x÷5=52
    √(x+1)+√（x+2）+√（x+3）=72
    5x+x÷5=52
    X-X*0.129-X/0.255*0.15-X*0.005-X*0.06-8.5-X/1.17*0.17=0
    0.25x/17.5+0.25x/21-0.5x/21=0.05
    0.25x/17.5-0.75x/21=0.05
    0.25x/17.5-0.75x/21=3
    (x-2020)^2+(x-2024)^2=30
    (8x+(1.5x*3))*22+8*2*12x=7000
    (8x+(1.5x*3))*22+8*12x=7000
    (8x+(1.5x*3)*22+8*12x=7000
    (8x+(1.5x*3)*22)+(8*12x)=7000
    (8x+(1.5x*3)*22)+8*12x=7000
    (1.32+2*x)^2*(2.45+x)=34
    (1.32+2*x)^2*(2.45+x)=34
    x^2-40x+204＝0
    K=2606.5+104.26+0.01K+60.86+0.0002K+914.63+0.0034K+0.0529K
    (1/2)-(x-1)/3=1
    1/2-(x-1/3)=1
    1/2-x-1/3=1

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