1. ~M / T ⊃ (V • ~M)
2. T ⊃ W
3. W ⊃ V
4. T ⊃ V 2,3, Hypothetical syllogism
5. ~T ∨ V 4, Material implication
6. ~M ∨ ~T 1, Addition
7. ~T ∨ ~M 6, Commutation
8. (~T ∨ V) • (~T ∨ ~M) 5,7, Comjunction
9. ~T ∨ (V • ~M) 8, Distribution
10. T ⊃ (V • ~M) 10, Material implication
Edwin