To apply the property of negative integer exponents, we use the rule that states \( a^{-n} = \frac{1}{a^n} \).
Given the expression \((\frac{5}{4})^{-9 \cdot -12}\):
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First, calculate the exponent: \[ -9 \cdot -12 = 108 \]
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Rewrite the expression: \[ \left(\frac{5}{4}\right)^{108} \]
Since the exponent is positive now, the expression is equivalent to: \[ \frac{5^{108}}{4^{108}} \]
Thus, the final expression with positive exponents is: \[ \frac{5^{108}}{4^{108}} \]