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Math Help - exponential equation

  1. #1
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    exponential equation

    I'm a little lost... I get all messed up when new things get thrown in please help!
    solve
    7*3^x=10-3^x
    it has to be an exact answer... I don't know how to arrive there!
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  2. #2
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    7 \cdot 3^x = 10 - 3^x<br />

    8 \cdot 3^x = 10

    3^x = \frac{5}{4}

    can you finish?
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  3. #3
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    I feel a little stupid now... thank you very much for your help!
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