close
    2 |4x| - 8 = 16 Solve

    0  Views: 582 Answers: 1 Posted: 11 years ago

    1 Answer

    2 |4x| - 8 = 16
    8x - 8 = 16
    8x - 8 + 8 - 16 + 8
    8x = 24
    8x/8 = 24/8 = 3
    2 (4*3) - 8 = 16
    2 (12) - 8 = 16
    24 - 8 = 16
    16 = 16 

    chelleanne

    From what I can remember about absolute values, wouldn't you have to clear the absolute value bars by splitting the equation into two possible cases, one for each sign? You did the positive, now you have to do the negative.

    (8x) - 8 = 16
    8x - 8 = 16
    8x = 24
    x = 3

    -(8x) - 8 = 16
    -8x - 8 = 16
    -8x = 24
    x = -3

    x = 3, -3
    P.S. How do you type the absolute value bars?
    Bob/PKB

    In mathematics, the absolute value (or modulus) | a | of a real number a is the numerical value of a without regard to its sign. So, for example, the absolute value of 3 is 3, and the absolute value of –3 is also 3. The absolute value of a number may be thought of as its distance from zero. (Wikipedia)


    Top contributors in Homework Help category

     
    ROMOS
    Answers: 292 / Questions: 0
    Karma: 15225
     
    country bumpkin
    Answers: 164 / Questions: 0
    Karma: 10395
     
    Benthere
    Answers: 22 / Questions: 0
    Karma: 8625
     
    Colleen
    Answers: 353 / Questions: 0
    Karma: 7205
    > Top contributors chart

    Unanswered Questions

    7ball
    Answers: 0 Views: 3 Rating: 0
    7ball
    Answers: 0 Views: 4 Rating: 0
    abd
    Answers: 0 Views: 5 Rating: 0
    ku19dev
    Answers: 0 Views: 5 Rating: 0
    55win55info
    Answers: 0 Views: 7 Rating: 0
    88five88net
    Answers: 0 Views: 9 Rating: 0
    > More questions...
    452429
    questions
    719768
    answers
    754696
    users