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Solve the equation: (60)/(x-5) - (6)/(x) = (1)/(6)

Mathematics

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Answer

x=329±1089612x = \frac{329 \pm \sqrt{108961}}{2}

Step-by-step solution

4 steps
  1. Combine the fractions on the left side of the equation.

    The given equation is:

    60x−5−6x=16\frac{60}{x-5} - \frac{6}{x} = \frac{1}{6}

    Find a common denominator for the left side, which is x(x−5)x(x-5):

    60x−6(x−5)x(x−5)=16\frac{60x - 6(x-5)}{x(x-5)} = \frac{1}{6}

    Distribute the −6-6:

    60x−6x+30x2−5x=16\frac{60x - 6x + 30}{x^2 - 5x} = \frac{1}{6}

    Combine like terms in the numerator:

    54x+30x2−5x=16\frac{54x + 30}{x^2 - 5x} = \frac{1}{6}
  2. Eliminate denominators by cross-multiplication.

    Multiply both sides by 6(x2−5x)6(x^2 - 5x):

    6(54x+30)=1(x2−5x)6(54x + 30) = 1(x^2 - 5x)

    Distribute the 6 on the left side:

    324x+180=x2−5x324x + 180 = x^2 - 5x
  3. Rearrange the equation into the standard quadratic form ax2+bx+c=0ax^2 + bx + c = 0.

    Move all terms to the right side to set the equation to zero:

    0=x2−5x−324x−1800 = x^2 - 5x - 324x - 180

    Combine like terms:

    x2−329x−180=0x^2 - 329x - 180 = 0
  4. Apply the completing the square method to solve for xx.

    Move the constant term to the right side:

    x2−329x=180x^2 - 329x = 180

    To complete the square, add (b2)2(\frac{b}{2})^2 to both sides. Here, b=−329b = -329.
    So, (−3292)2=1082414(\frac{-329}{2})^2 = \frac{108241}{4}.

    x2−329x+(−3292)2=180+(−3292)2x^2 - 329x + \left(\frac{-329}{2}\right)^2 = 180 + \left(\frac{-329}{2}\right)^2 (x−3292)2=180+1082414\left(x - \frac{329}{2}\right)^2 = 180 + \frac{108241}{4}

    Convert 180 to a fraction with denominator 4: 180=180×44=7204180 = \frac{180 \times 4}{4} = \frac{720}{4}.

    (x−3292)2=7204+1082414\left(x - \frac{329}{2}\right)^2 = \frac{720}{4} + \frac{108241}{4} (x−3292)2=720+1082414\left(x - \frac{329}{2}\right)^2 = \frac{720 + 108241}{4} (x−3292)2=1089614\left(x - \frac{329}{2}\right)^2 = \frac{108961}{4}

    Take the square root of both sides:

    x−3292=±1089614x - \frac{329}{2} = \pm\sqrt{\frac{108961}{4}} x−3292=±1089614x - \frac{329}{2} = \pm\frac{\sqrt{108961}}{\sqrt{4}} x−3292=±1089612x - \frac{329}{2} = \pm\frac{\sqrt{108961}}{2}

    Solve for xx:

    x=3292±1089612x = \frac{329}{2} \pm \frac{\sqrt{108961}}{2} x=329±1089612x = \frac{329 \pm \sqrt{108961}}{2}

    The two solutions are:

    x1=329+1089612x_1 = \frac{329 + \sqrt{108961}}{2} x2=329−1089612x_2 = \frac{329 - \sqrt{108961}}{2}
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