Compute $$\sum_{n=1}^{\infty} \frac{3n-1}{2^n}.$$
Question:
Compute $$\sum_{n=1}^{\infty} \frac{3n-1}{2^n}.$$
Answer:
Let's think step by step.

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Compute $$\sum_{n=1}^{\infty} \frac{3n-1}{2^n}.$$
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