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    BOB48990 Posts: 1, Reputation: 1
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    #1

    Oct 5, 2009, 03:23 PM
    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
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Oct 6, 2009, 12:30 AM






    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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