1. The problem statement, all variables and given/known data Solve for the unknowns. [PLAIN]http://img535.imageshack.us/img535/7494/24800354.png [Broken] [PLAIN]http://img517.imageshack.us/img517/5765/33984576.png [Broken] [PLAIN]http://img707.imageshack.us/img707/2511/75290122.png [Broken] [PLAIN]http://img96.imageshack.us/img96/2593/40824092.png [Broken] 2. Relevant equations No actual equations are necessary, our teacher just told us that: 1. In a pathway, Voltage in = Voltage out 2. The current that enters a junction must leave that junction. 3. The attempt at a solution We've been assigned pages and pages of these, and these 4 are the ones I had trouble with. In the first diagram, v2= 90-70=20v. I'm stuck from there. I normally look for online tutorials myself, but I couldn't find any of these ones- without resistance. Thanks, all help is appreciated.