To simplify the expression \( \frac{3^{-2}}{3^{-3}} \), we can use the property of exponents that states
\[ \frac{a^m}{a^n} = a^{m-n}. \]
Apply this to the expression:
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Rewrite the expression with the property: \[ \frac{3^{-2}}{3^{-3}} = 3^{-2-(-3)} = 3^{-2 + 3} = 3^{1}. \]
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This simplifies to: \[ 3^{1} = 3. \]
Now looking at the provided responses, the third response which simplifies to \(3^{1}\) is correct:
\(3^{-2} \div 3^{-3} = 3^{(-2) - (-3)} = 3^1 = 3\).
Therefore, the correct response is:
3−23−3=3(−2)−(−3)=31=3.