9" x 32 x (31/2-(27)" 33m x 23 1 17. If prove that m-n=1.

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$$\begin{gathered} \frac{9^n\times 3^2\times {\left(3^{-n/2}\right)}^{-2}-{\left(27\right)}^n}{3^{3m}\times 2^3}=\frac{1}{27} \\ \Rightarrow \frac{{\left(3^2\right)}^n\times 3^2\times \left(3^n\right)-{(3}^{}}{} \end{gathered}$$

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