How do I find the current across the 5Ω resistor? I worked out the supply current by simplifying the circuit down. I then went on to work out the voltage across the 3Ω resistor using the supply current. I then used that voltage to then work out the voltage across the 4Ω resistor. Now I'm stuck. How do I work out the voltages of the other 3 resistors and get the current across the 5Ω resistor?