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Math relations help

  1. Dec 4, 2006 #1
    1. The problem statement, all variables and given/known data

    I need to express V in terms of Z and A.

    i know

    V= (3/5)Y + (2/5)Z

    given

    y=2A-3X
    X=(1/6)Z + (5/6)Y


    2. Relevant equations



    3. The attempt at a solution

    ok. my first attempt was to isolate y in the second equation, and let the two equations equal each other. That eliminates y so i cant solve the problem. I dont think

    i need a hint to start at least

    thanks
     
  2. jcsd
  3. Dec 4, 2006 #2

    radou

    User Avatar
    Homework Helper

    A simple hint: you need to express Y in terms of Z and A from the second and third equation, and then return to the first one. (i.e. eliminate X)
     
  4. Dec 4, 2006 #3
    yep i think i can do it now..thanks bud
     
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