1. The problem statement, all variables and given/known data The problemas statement is: "Find Vo and Io by the superposition principle" 2. Relevant equations Nodal Analysis and The Superposition Theorem. 3. The attempt at a solution So, I tried to shutdown first the independent 30V tension font. It led me to Vo = 8V. Then, turning off the 6A current font, led me to Vo = 2V. So the final Vo will be equation the sum of the two others: 10V. The correct anwser is 17,99V(so, Io = 1,799A). Thank you!