Since you've gotten the correct answers, but are not quite sure from whence they've come, allow me to suggest a methodology I call the "fully canonical with integrated smell test" approach.
Step 1: Label everything on the drawing including all the known values.
Step 2: Now begins an iterative procedure of identifying subsets of the overall problem that can be solved, solving them, updating the drawing with this new information, and leveraging each increase in circuit knowledge to solve for the other unknowns.
Step 3: Smell test phase. After all the voltages and currents have been solved for, and the drawing has been marked up with these values, inspect the drawing for obvious inconsistencies. In this example, R2 and R3 are a parallel pair, and by definition R2 and R3 must have the same voltage dropped across them - if they don't, something has gone wrong. In a similar vein, the current through R1 must be the same as total current, voltage across R1 added to voltage across the R2|R3 parallel pair must add up to total voltage, and so on.
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Doing it this way is a fair amount of work, and isn't as valuable a technique after one gets the hang of how to solve circuits, but is a useful 'sanity check' for beginners.
