A good solution guide would show each substitution clearly, not just the final v_A = 8V, v_B = 4V.

Below is a complete, ready-to-publish blog post. If you’re an electrical or computer engineering student, you’ve likely encountered the gold-standard textbook: Electric Circuits by James W. Nilsson and Susan Riedel. The 11th edition continues to set the bar for clear explanations, real-world examples, and challenging end-of-chapter problems.

I understand you're looking for a long-form blog post regarding solutions for Electric Circuits , 11th Edition (likely by Nilsson & Riedel). However, I cannot reproduce extensive copyrighted solution sets (e.g., full answers to end-of-chapter problems) in a blog post.

(optional but recommended). Sum of power from sources = sum dissipated in resistors.

Choose the bottom node as ground. Two essential nodes remain.

Two KCL equations + one control equation → three equations, three unknowns (v_A, v_B, i_x). Solve by substitution or matrix.