Discrete, use propositional logic to prove that the argument is valid for number 15 and 22. I having the problem with this three question. please explain it explicitly. thank you .

13. (A V B'), ( 14. , ( A) ). B' (A, C) 17, A, (AVB) B Section 1.2 Propositional Logic 37 Use propositional logic to prove the validity of the arguments in Exercises 25-33. These will become additional derivation rules for propositional logic, summarized in Table 1.14. 126, (P Q) (Q' P') 27.0P)-O