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Math Help - Solve for r

  1. #1
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    Solve for r

    P= A/ l + rt
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  2. #2
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    Quote Originally Posted by lovely08 View Post
    P= A/ l + rt
    Hello,

    unfortunately your equation isn't clear.
    If you mean:

    P=\frac Al + rt~\iff~ P - \frac Al = rt~\iff~r = \frac Pt - \frac{A}{l \cdot t}

    or:

    P=\frac{A}{l + rt}~\iff~l+rt=\frac AP~\iff~rt = \frac AP - l~\iff~r = \frac{A}{P\cdot t} - \frac lt
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