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Thread: Complex Fraction Frustration

  1. September 22nd 2010, 05:24 AM #1
    Latvija13
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    Complex Fraction Frustration

    I'm supposed to simplify this complex fraction to equal X, but I just can't seem to find out how to get that to happen. I think my problem could be because I'm not getting the right LCD. I thought I could just multiply everything by x+3, but that didn't work.

    \frac{7}{\frac{7}{x+3}} -3
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  2. September 22nd 2010, 05:29 AM #2
    MathoMan
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    \displaystyle\frac{7}{\frac{7}{x+3}}-3=\frac{\frac{7}{1}}{\frac{7}{x+3}}-3=x+3-3=x
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