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Math Help - Algebra help

  1. #1
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    Algebra help



    , , and
    What is the PF?
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  2. #2
    Senior Member I-Think's Avatar
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    Re: Algebra help

    Let's start by filling in the values. SO
    19=9(\frac{1}{1-\frac{Pf}{478}})
    Simplifying
    19=9(\frac{1}{\frac{478-Pf}{478}})
    19=9(\frac{478}{478-Pf})
    19=(\frac{4302}{478-Pf})
    After this we cross-multiply. and solve for Pf.
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