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Math Help - Transforming Formulas

  1. #1
    HorseGirl31
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    Transforming Formulas

    ok i know you probably think im stupid for not getting this but....

    i dont get
    r=2s-8

    solving for the s.

    please help!! i have a quiz tomorrow!! ahhhhhhhhhh!!!
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  2. #2
    Super Member Aryth's Avatar
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    Well, all we have to do is make the s be on one side of the equation BY ITSELF, so we take our original problem:

    r = 2s - 8

    First, we add 8 to both sides of the equation:

    r + 8 = 2s - 8 + 8

    Notice what's left on the right side:

    r + 8 = 2s

    Now we divide both sides of the equation by 2:

    \frac{1}{2}r + 4 = 2s/2

    Look what's left:

    \frac{1}{2}r + 4 = s

    And problem solved.

    All you have to do is move everything to the other side by doing the opposite to both sides of the equation.
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