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    chelsters's Avatar
    chelsters Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 27, 2010, 09:06 PM
    hardest problem i have ever had!!
    I have spent at least 3 hours trying to solve this. It is the hardest problem I have. Please help me solve this so I can get a better grade in Algebra 2!
    Solve for w,x,y,z

    4w+x+2y-3z=-16
    -3w+3x-y+4z=20
    -w+2x+5y+z=-4
    5w+4x+3y-z=-10
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Dec 28, 2010, 09:20 AM

    Hi!

    Shouldn't be too hard if you apply your principles. Just might take a little while.

    Have you tried a mixture of both elimination and substitution?
    InfoJunkie4Life's Avatar
    InfoJunkie4Life Posts: 1,409, Reputation: 81
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    #3

    Jan 13, 2011, 11:59 AM
    You may also consider exploring matrices and addition of equations.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #4

    Jan 13, 2011, 03:25 PM

    Here's a hint:

    w = -1
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #5

    Jan 13, 2011, 09:44 PM

    It's been two weeks now and I don't really think that the OP will come any soon... =/
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