Re: [EE] Wonder if anyone can help

Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL) with some
algebra and the standard network analysis tricks should get you wherever
you need to go pretty quickly. Tons of videos, articles, books, etc. on it.

And a simulator is always a viable option for playing around and getting an
intuitive feel for the circuit if algebra isn't cutting it.

I think your question might be missing some context that might aid others
in guiding you.