Question 1067206
<pre><b><font size = 4>

 1. (G • P) &#8594; K
 2. E &#8594; Z
 3. ~P &#8594; ~Z
 4. G &#8594; (E v L)   / (G • ~L) &#8594; K

              | 5. G • ~L         ACP
              | 6. G            5, Simp.
              | 7. ~L • G       5, Comm.
              | 8. ~L           7, Simp. 
              | 7. E v L        4,6, MP
              | 9. L v E        7, Comm
              |10. E            9,8, DS
              |11. Z            2,10 MP
              |12. ~~Z &#8594; ~~P    3, Trans.
              |13. Z &#8594; P        12, DN
              |14. P            13,11, MP
              |15. G • P        6,14, Conj.
              |16. K            1,15, MP

17. (G • ~L) &#8594; K           5-16  CP

Edwin</pre></font></b>