1. (E∨F) → ~G 2. ~H 3. H∨K 4. (K∨L)→E / ∴ ~G ------------------------------- 5. K 3,2 Disjunctive Syllogism 6. K∨L 5 Addition 7. E 4,6 Modus Ponens 8. E∨F 7 Addition 9. ~G 1,8 Modus Ponens