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Transposition/re-arrangement of equation

  1. Mar 15, 2012 #1
    Im having issues with my weak algebraic skills trying to correctly re-arrange the following equation for "d"


    i know that d=70 .

    I have no idea how to attack this transposition.

    Could someone please give me a few pointers or point me to a video that will help?

    Thanks in advance
  2. jcsd
  3. Mar 15, 2012 #2


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    hi russjai! :smile:

    (try using the X2 button just above the Reply box :wink:)
    if i'm reading it right, that's of the form A = B/d2 + C/d3

    you can multiply throughout by d3 to make it Ad3 - Bd - C = 0

    there's no easy way to solve that, and the solution certainly won't be a whole number :redface:
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