OK, see if this gets you started.
Ohm's Law, as you know, states that
V, the voltage across a resistor, is equal to
I, the current through it, multiplied by
R, its resistance. So for each resistor, figure out the voltage you want to appear across it at a hypothetical point of operation. Then rearrange, and you have an equation for the current through the resistor.
Assuming the op amp's inputs don't take any current themselves, the current through two resistors in series will be equal, so you can set those two currents equal to each other and thus combine two equations.
You'll need two hypothetical operating points to get a solvable set of equations.
If nobody beats me to it, I'll work through a
similar problem (but not the same!!) so you can follow along. But I want to eat dinner first
Also, to beat the peanut gallery to the point, yep, there are other ways to do this. Some require fewer equations. But I'd rather have a simple set of equations that you can be handy with than memorize one for every imaginable situation.