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Math Help - Simultaneous equation help

  1. #1
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    Simultaneous equation help

    Can anyone solve this simultaneous equation

    X + Y = 300
    4X + 6Y = 1380
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Simultaneous equation help

    Hint: multiply the first equation by -4, then add the two equations, to eliminate X, and then solve for Y. Then use the original first equation to find X.
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  3. #3
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    Re: Simultaneous equation help

    I done this but I am not getting the same answer that is in the answer booklet, what answer did you get.?? Thanks fir getting back to me
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  4. #4
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    Re: Simultaneous equation help

    I get x=210.
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  5. #5
    MHF Contributor MarkFL's Avatar
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    Re: Simultaneous equation help

    Quote Originally Posted by Danielle89 View Post
    I done this but I am not getting the same answer that is in the answer booklet, what answer did you get.?? Thanks fir getting back to me
    Show what you did, then we can find where the mistake is (perhaps even with the answer booklet). Identifying where your mistake may be will be more helpful to you than supplying the solution, as then you may avoid similar errors in the future.
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