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Math Help - how do I verify this question?

  1. #1
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    how do I verify this question?

    6x+4(8-x)=22
    6x+32-4x=22
    6x-4x=22-32
    2x divided by 2 = -10 divided by 2
    x= -5

    I tried verifying it like this

    6x-5+4(8-5)

    but I don't end up with what it equals please help.
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by billR2D2 View Post
    6x+4(8-x)=22
    6x+32-4x=22
    6x-4x=22-32
    2x divided by 2 = -10 divided by 2
    x= -5

    I tried verifying it like this

    6x-5+4(8-5)

    but I don't end up with what it equals please help.
    you verify by replacing ALL the x's with -5 and show that the equation makes sense. thus, when you replace ALL the x's on the left hand side of the equation, you want to get 22
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  3. #3
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    6x+4(8-x)=22

    replace x with -5

    6(-5) + 4(8-(-5)) = 22
    -30 + 4(13) = 22
    -30 + 52 = 22
    22 = 22
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