Process:
(A) Solve for R1 and R3 in series
(B) Solve for R2 and R4 in series
(C) Solve for (A) and (B) in parallel
(D) Solve for (C) and R5 in series
The value for (D) is the equivalent resistance for the circuit - and you can get the current flowing, using Ohm's Law.
If you then want to find out what current is flowing within the network:
Using the current calculated above, you can find the voltage across R5 (Ohm's Law again)
You can then work out the voltage that is across (A) and (B) and, once more, using Ohm's Law, work out the current passing through each. Note: These 2 current values should add up to the total current.
You can then work out the voltages across each resistor: R1, R2, R3 and R4.