Can someone solve this for me?

4. (30 pt.) Use the laws of propositional logic to prove that the following compound propositions are logically equivalent. a. (5 pt.) (p v q) ^-Cp ^-q) and q b. (5 pt.)-p h(q V r) and (q p) (r p) C. (10 pt.)-Cpv (q ^ (-p -r))) and-p ^ (q r) d. (10 pt.) p (p q) and pv