Simplify (63^(1-n)7^(n-1)81^-1)/(4^(n+2)*36^(-n-1))

$\frac{63^{1 - n} \cdot 7^{n - 1} \cdot 81^{- 1}}{4^{n + 2} \cdot 36^{- n - 1}}$

Step 1

Move $81^{- 1}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .