Hello, can you help me with this unbalanced three phase circuitquestion? The question and the given solution can be found here:http://www.chegg.com/homework-help/Fundamentals-of-Electric-Circuits-5th-edition-chapter-12-problem-39P-solution-9780073380575. Question 1 is that why there is no equation containing 100∠120°V, it seems like this source doesn’t supply any power as it idoesn’texist in any equation. Question 2 is that I transferred the delta-connected source intowye-connected source first and then set up three meshe equations. Isolved them but the results were incorrect. I want to know whetherit is possible to use this method. . . .