# Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set: 22

$\frac{1}{27}$

#### Work Step by Step

Start with given expression: $\frac{3^{4}}{3^{7}}$ Use quotient rule to subtract exponents: $3^{-3}$ Use negative exponent rule to simplify: $\frac{1}{3^{3}}=\frac{1}{27}$

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