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Math Help - Linear Equations

  1. #1
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    Exclamation Linear Equations

    Solve the following equations by reduction to echelon form

    x + 3y + 2z = 1
    2x + y + z = 7
    3x + 2y - z = 7
    Last edited by CaptainBlack; April 4th 2011 at 04:32 AM.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by llama11 View Post
    Solve the following equations by reduction to echelon form

    x + 3y + 2z = 1
    2x + y + z = 7
    3x + 2y - z = 7
    And what we normally say under these circumstances is: What have you tried, where are you stuck?

    CB
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  3. #3
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    i cannot reduce it to echelon form. i can solve from after there
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  4. #4
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    But you haven't yet shown what you have tried. What have you tried to reduce to echelon form?
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  5. #5
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    i dont hav any working to show all i hav is garbage. since friday i hav been trying to get it to echelon form but i cant. its d echelon part i hav problems with
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  6. #6
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    Even "garbage" would show that you had tried- and we might be able to point out your errors or give hints. As it is we have absolutely no idea what you do understand about this problem and what hints would help you. Do you understand what "echelon form" means? Do you know anything at all about using row operations to put a matrix in echelon form? If so, the arithmetic is straight forward. For example, what do you get if you subtract 2 times the first row from the second row and then subtract 3 times the first row from the third row?
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