Question

how can i slove 1×1^n-1/3×3^n-1​

Answer 1

$\frac{1 \times {1}^{n} - 1}{3 \times {3}^{n} - 1} \\ \\ = \frac{ {1}^{1 + n } - 1 }{ {3}^{1 + n} - 1 }$