If $64^5 = 32^x$, what is the value of $2^{-x}$?  Express your answer as a common fraction.
Question:
If $64^5 = 32^x$, what is the value of $2^{-x}$?  Express your answer as a common fraction.
Answer:
Let's think step by step.

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\frac{1}{64}
If $64^5 = 32^x$, what is the value of $2^{-x}$?  Express your answer as a common fraction.
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