Tính: \[ \lim_{x \to \infty} \left( \frac{3^{n+1} + 5 \times 2^n}{2 \times 3^{n-1} - 7} \right) \]

----- Nội dung ảnh -----
\[
\lim_{x \to \infty} \left( \frac{3^{n+1} + 5 \times 2^n}{2 \times 3^{n-1} - 7} \right)
\]