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-   -   Solving Systems of Equations in three variables (https://www.askmehelpdesk.com/showthread.php?t=403004)

  • Oct 5, 2009, 03:23 PM
    BOB48990
    Solving Systems of Equations in three variables
    How do I solve system of equations in three variables? Ex: 2x+y-z=-8
    4x-y+2z=-3
    -3x+y+2z=5
  • Oct 6, 2009, 12:30 AM
    Unknown008






    First, try making equations with two variables, which you'll then solve simultaneously.

    For example:



    ---a.



    Sub a in 2.





    ----b.



    Sub a in 3.



    ----c

    now, solve b and c simultaneously!

    :)

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