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Math Help - Equations help

  1. #1
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    Help with Isolating in Equations

    Hello,

    I'm having a little problem with my math problems. I'm 16 and from Iceland and I hope you forgive my bad English.

    These are the equations I'm having trouble with:

    a) p = 5 + at - I'm suppose to isolate the t.

    b) y = 9(x - 7) - I'm suppose to isolate the x.

    I get these outcomes (the signs look funny, I hope you get what I'm talking about):

    a) t = 5/ap

    b) x = y + 63/9

    If I'm wrong, can you help me out?

    My dearest thanks,

    Gronfeldt
    Last edited by Gronfeldt; September 9th 2010 at 03:01 PM.
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  2. #2
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    yeah i believe thats correct and just reduce the 63/9 = 7
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  3. #3
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    Quote Originally Posted by justinwager View Post
    yeah i believe thats correct and just reduce the 63/9 = 7
    Thanks for the help
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  4. #4
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    Quote Originally Posted by Gronfeldt View Post

    a) p = 5 + at - I'm suppose to isolate the t.
    p = 5 + at

    p - 5 = at

    \frac{p - 5}{a} = t

    Quote Originally Posted by Gronfeldt View Post

    b) - I'm suppose to isolate the x.
     y = 9(x - 7)

     \frac{y}{9} = x - 7

     \frac{y}{9} +7= x
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  5. #5
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    Quote Originally Posted by justinwager View Post
    yeah i believe thats correct and just reduce the 63/9 = 7
    How are they correct?
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  6. #6
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    Quote Originally Posted by pickslides View Post
    p = 5 + at

    p - 5 = at

    \frac{p - 5}{a} = t



     y = 9(x - 7)

     \frac{y}{9} = x - 7

     \frac{y}{9} +7= x

    I believe you correct I'll use this.
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