x*x-19x/22-28/22=0
    x^e=e^x
    x+7.81*x^0.4=26.05
    x*x-19x/22-0.04=0
    2[1-1/3x+((1+x)/9)]=x-(10-3x)/6
    e3+x=2
    1-1/3(x-(1+x)/3)=1/2(2x-(10-3x)/3)
    1/3*(1+x)/3
    2[1-1/3(x-(1+x)/3)]=1/2(2x-(10-3x)/3)
    X-(X*0.065)-(X+1000000)*0.0003=1000000
    2 * sin(x) + 3 * cos(x) = 0
    ln1/2x
    X+X*0.2=17.37+12.12
    X+X*0.2=29.49
    X+X*0.2=20
    100(1-x)^3 = 1+x
    (x + 3)^3 + (x + 4)^3 = 251
    （593350.85+x）*1.13=670487.74
    ㏑（tan√x）
    1+N+(N+1)N=43

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