please EXPLAIN STEPS TO THE ANSWER. i have sent this question so many times but all the answers where copied from each other.

For the following switching circuit, find the logic function expression describing the cir- cuit by the three methods indicated, simplify each expression, and show they are equal. (a) subdividing it into series and parallel connections of subcircuits until single switches are obtained (b) finding all paths through the circuit (sometimes called tie sets), forming an AND term for each path and ORing the AND terms together