Example 1 (Index Equation – Equal base) 4 Feb,2014 userLeave a comment Example 1 Solve each of the following. (a) ${16}^{x}=8$ (b) ${9}^{x}{.3}^{x-1}=81$ (c) ${5}^{n+1}=\frac{1}{{125}^{n-1}}$