Question

Pls ans this question

Answer 1

$</p><p>\sf \rightarrow \quad \dfrac{ {2}^{n} + {2}^{n - 1} }{ {2}^{n + 1} + {2}^{n} } \\ \\ \sf \rightarrow \quad \frac{ \cancel{ {2}^{n}} }{ \cancel{{2}^{n}} } \bigg(\frac{ 1 + {2}^{ - 1} }{1 + 2} \bigg) \\ \\ \sf \rightarrow \quad \dfrac{1 + \dfrac{1}{2} }{3} \\ \\ \sf \rightarrow \quad \dfrac{ \frac{3}{2} }{3} \\ \\ \sf \rightarrow \quad \dfrac{ \cancel{3}}{2} \times \frac{1}{ \cancel{3} } \\ \\ \sf \rightarrow \quad \frac{1}{2} </p><p>$