Think about the electrical laws we have learned so far. They give us a toolbox of ways to find voltages and currents in circuits. We can use them together, sequentially, as well. Think of starting with what you know on the left and moving to what you want to know (your unknowns) on the right. Find a path through the equations that lets you move from what you know (the input to one method) to an output that can be input to another method and so on, until you get to what you want. Most likely, you are already doing this naturally, except that once in a while you might get stuck. Thinking about the inputs (what is known) and outputs (what is not) for each method may help you think through the solution method in a way that can get you unstuck. Give it a try.