Complex circuits with Kirchoff's law

[serverxeon]

I have the diagram on the right,

I've set up a few equations to solve...

My calculator tell me mathematical error. can someone point out the error? thanks.

http://img21.imageshack.us/img21/5395/imgyqc.jpg

 

[ehild]

You have to input the value of the emf. The node equations are not independent. ehild