2x＝150+30
    2×23/22-x=2
    26.25 = -1E-04x^5 + 0.0122x^4 - 0.3685x^3 + 3.6461x^2 - 12.578x + 116.42
    26.25 = -1E-04x^5 + 0.0122x^4 - 0.3685x^3 + 3.6461x^2 - 12.578x + 116.42
    26.25 = -1E-04x^5 + 0.0122x^4 - 0.3685x^3 + 3.6461x^2 - 12.578x + 116.42
    1.25x-x=28+28-6
    26.25=-0.0001x^6 + 0.008x^5 - 0.1842x^4 + 1.9007x^3 - 9.105x^2 + 18.528x + 93.253
    x-1.25x=28+28-6
    x-1.25x=28+28-6
    ln(x+1)^(1/lnx)
    26.25 =-0.0001x^6 + 0.008x^5 - 0.1842x^4 + 1.9007x^3 - 9.105x^2 + 18.528x + 93.253
    sinx=0.32121502033
    26.25 = -0.0001x^6 + 0.008x^5 - 0.1842x^4 + 1.9007x^3 - 9.105x^2 + 18.528^x + 93.253
    sinx=0.1628093966577
    25= -0.0377x^4 + 1.0883x^3 - 10.141x^2 + 22.233x + 86.75
    25= -0.0377x4 + 1.0883x3 - 10.141x2 + 22.233x + 86.75
    x+28-1.25x+28=6
    x+28-（1.25x-28）=6
    x+28-1.25x+28
    x^2-2x=5

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