You can
put this solution on YOUR website! It helps if you know the rules by heart (ie understand what they truly mean).
1. C -> (T -> L)
2. ~L
3. ~E -> C
4. L v ~E /~T
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5. ~E 4,2 Disjunctive Syllogism
6. C 3,5 Modus Ponens
7. T -> L 1,6 Modus Ponens
8. ~T 7,2 Modus Tollens