Conclusion: S→R

Prove:

1)P→(Q→R) Introduction to the premise

2)Q→(P→R) 1) equivalent substitution

3) introduction of q premise

4) p → r ... (for you)

5)﹁S∨P ……

6) Introduction of additional premises

7)P ……

8)R ……

9)S→R ……

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