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Question
Simplify:
\[\left\{ 3^{- 1} \times 4^{- 1} \right\}^{- 1} \times 5^{- 1}\]
Sum
Solution
\[\left\{ 3^{- 1} \times 4^{- 1} \right\}^{- 1} \times 5^{- 1}\]`-(1/3xx1/4)^(-1)xx1/5` → (a−1 = 1/a)
\[= \left( \frac{1}{12} \right)^{- 1} \times \frac{1}{5}\]
\[= 12 \times \frac{1}{5}\] → (a−1 = 1/a)
\[= \frac{12}{5}\]
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