(x-87.532)*60-(87.532*60*0.025%+x*60*0.025%) =-3
    (x-87.532)*60-(87.532*60*0.025%+x*60*0.025%) =2
    (x-87.532)*60-(87.532*60*0.025%+x*60*0.025%)=3
    5：3×x^2/3＋2/3x^2/3＝0
    （X+3）^2=（2X+1）^2
    (x-2)*10-(2*10*0.02%+x*10*0.02%)=3
    2^x+3^x=6^x
    3^x+2^x=1
    x^3-6x^2+3x+10
    x^3-6x^x+3x+10
    100x＾2+145x-9=0
    x+1+（1+x）^2+（1+x）^3+（1+x）^4=4.94
    （1/6）/2=x
    （1/6）*2=x
    （1/6）/2=x
    i-6%/7%-6%
    （1/6）/（5-3）*3=x
    (x-3)/2=(x+4)/3
    1+2=x
    (x-3)/2=(x+4)/3

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