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Math Help - Where did I go wrong in expanding the brackets?

  1. #1
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    Where did I go wrong in expanding the brackets?

    11-3(x+2) =
    8(x+2) =
    8x+16

    Why was this marked as incorrect?
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  2. #2
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    Re: Where did I go wrong in expanding the brackets?

    Quote Originally Posted by Ashir View Post
    11-3(x+2) =
    8(x+2) =
    8x+16

    Why was this marked as incorrect?
    you did not follow the order of operations ...

    11 - 3(x+2) =

    11 - 3x - 6 =

    5 - 3x
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  3. #3
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    Re: Where did I go wrong in expanding the brackets?

    Quote Originally Posted by Ashir View Post
    11-3(x+2) =
    8(x+2) =
    8x+16

    Why was this marked as incorrect?

    remove brackets first to get -3x - 6 then do the addition-subtraction
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  4. #4
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    Re: Where did I go wrong in expanding the brackets?

    Oh, thanks. But why couldn't I subtract 3 from 11 first?
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  5. #5
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    Re: Where did I go wrong in expanding the brackets?

    Quote Originally Posted by Ashir View Post
    Oh, thanks. But why couldn't I subtract 3 from 11 first?
    The Order of Operations: PEMDAS
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  6. #6
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    Re: Where did I go wrong in expanding the brackets?

    I got it, thanks for the help!
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