Taking Further Maths at secondary school here in England, and I'm struggling with some of the concepts to do with complex numbers. One question I have for homework right now is the following:

(1+j)z=3+j

I am pretty sure I can do the question in general as I have notes, but have no idea how to start it off. Thinking it might involve multiplying by the conjugate, but can't get to that stage. Any help would be appreciated.