Question

me ajudem ! por favor !

Answer 1

$\dfrac{2^{n+1}+2^n}{2^n}\times 3^{-1}\\\\ =\dfrac{\not2^n\times2^1+\not2^n}{\not2^n}\times \dfrac{1}{3}\\\\ =2\times \dfrac{1}{3}\\\\ \boxed{=\dfrac{2}{3}}$

Bons estudos!