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    3^x+5^x=152
    13.1×c=(3.3+c)×7.93
    441x²=100+81x²+90x
    4/3*t*(5t-10)=5*t*(16-5t)
    64+1763x^2+224x=0
    x*x-14.4x+9.17=0
    5*t*4/3*t=(10-5*t)*(8-4/3*t)
    9/4x+6=5/1
    x^2-60x+141=0
    x^2-60x+1659=0
    x^2-9.2x+12.2=0
    5.1033=((28.02*0.639(x+0.1))/(1+0.639(x+0.1))*((100-6.66-1.14)/100)*(1/(1+0.31*1.14)+((0.76(x+0.1))/(1.3*0.101325))
    2x = 5x
    5x^2+250x+100000=0
    X*(8.8-X)=19
    (x-200)*145*145/(x*200)=71.214
    a^2-4a=0
    (x+3)*(x+7)
    228/125a=288/5
    y=log0.4

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