My question is related to nodal analysis and using supernodes. I don't have a pdf of the circuit in question but can try to get it if it helps.

Basically, I am unable to solve this circuit using nodal analysis when I write an equation around a supernode that contains a nonreference node and the reference node. I can't figure out why this won't work. If I write a different equation I'm able to get the correct answer, but why can't I do it around a supernode that contains the reference node? I just don't get it!

Thanks for your help!