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    (20/x-1)=(2/x)∧0.2*(2/x-1)
    20/x-1=(2/x)^0.2×(2/x-1)
    20/x-1=(2/x)^0.2*(2/x-1)
    0.015x*x*x*x-0.4x*x+1.7=0
    39.1748*0.2*x^0.2+x=8.096
    39.1748*0.2*x^0.2+x=20
    100=0.0013x^2-0.4785x+119.54
    x-39.1748*0.2*x^0.2=20
    100=0.0009x^2-0.4085x+119.77
    X*X+14X-1=0
    X/1.03*.03*1.06
    x2+14X-1=0
    (-150000*10+75000*4*sinx)/(75000*4cosx) = 14
    (-150000*10+75000*4*sinx)/(75000*4cosx)=14
    1.22*x=2.83
    0.5x^3+1.5x^2+x+3=0
    2444.89×1000000=13.8×1600x(1186-x/2)
    10^(1/x)=(0.002/7.42+2.5/(0.246*x))^(-2)
    10^(1/x)=(0.002/9.275+2.5/(0.384*x))^(-2)
    (6059-X-4042)/4042*85%=(1935+X-3115)/3115

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