1. (A v G) > K 2. K > (B > F) 3. A ∙ B :. F ------------------------------------------------------- 4. A 3 Simplification 5. B 3 Simplification 6. A v G 4 Addition 7. K 1,6 Modus Ponens 8. B > F 2,7 Modus Ponens 9. F 8,5 Modus Ponens