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Math Help - simultaineous equations

  1. #1
    Senior Member
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    simultaineous equations

    I am not quite getting this equation right for some reason?

    Equation;

    4x = 4 - 5(x + 2)

    4x = 4 - 5x - 10

    4x + 5x = - 6

    x = - 6/9 or - 0.66

    When I check the equation I get answers of - 2.64 and - 2.7

    These are obviously wrong but can't see where I am getting this incorrect?

    Please advise

    Thanks

    David
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  2. #2
    Super Member Quacky's Avatar
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    Re: simultaineous equations

    Your working out/solution is fine. There must be a typo in the question.
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  3. #3
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    Re: simultaineous equations

    Particularly since this is titled "simultaneous equations" but there is only one equation!
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  4. #4
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    Re: simultaineous equations

    Quote Originally Posted by HallsofIvy View Post
    Particularly since this is titled "simultaneous equations" but there is only one equation!
    Sorry didn't miss one out, It was the wrong title

    It should have read "algebraic expressions"

    David
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  5. #5
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    Re: simultaineous equations

    That reminded me of when they had solo "synchronized swimming" in the Olympics!
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