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28 December, 13:11

What is kn+4f=9f solve for f

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  1. 28 December, 13:18
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    Kn + 4f = 9f

    kn + 4f - 4f = 9f - 4f

    kn = 5f

    kn/5 = 5f/5

    kn/5 = f.

    f = kn/5 or

    f = 1/5 (kn).
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