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Math Help - Determing a value.

  1. #1
    Ash
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    Determing a value.

    I'm suppose to determine a value of m so that the solution of the equation equals 7.

    8-2x=m+4

    So I did--- 8-2x = (-10)+4
    8-2x = -6
    -2x = -14
    x = 7

    I think the answer is m = -10. When I was trying to find the value of m, I felt like I was working backwards. Do you know any other ways to find the value of m ???
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  2. #2
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    Hello, Ash!

    Determine the value of m so that the solution of the equation equals 7.
    . . . 8 - 2x .= .m + 4

    You already know that x = 7, right?

    Plug it in: . 8 - 2(7) .= .m + 4 . . . and solve for m.

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  3. #3
    Ash
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    Quote Originally Posted by Soroban View Post
    Hello, Ash!


    You already know that x = 7, right?

    Plug it in: . 8 - 2(7) .= .m + 4 . . . and solve for m.


    It all seems so clear now. That is a lot simpler then what I was doing. I was making it more complicated then what it was. Thanks for the help!!!
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