How do you prove that for all sets A , B and C , -LRB- A ∪ B -RRB- \ C = -LRB- A \ C -RRB- ∪ -LRB- B \ C -RRB- ?
How do I prove that for all sets A , B , and C , -LRB- A - B -RRB- - C = -LRB- A - B -RRB- - -LRB- A-C -RRB- ?