- #1
leo255
- 57
- 2
Homework Statement
Prove that if A and B are sets, then (A - B) U B = A U B
I think I might be missing a few steps here.
Homework Equations
The Attempt at a Solution
(A - B) U B =
1. (A ^ ~B) U B =
2. (A ^ ~B) U (A ^ B) =
3. A U B