Question: For each numbered statement that is not a premise in each of the formal proofs that follow, state the rule of inference that justifies it.

For each numbered statement that is not a premise in each of the formal proofs that follow, state the rule of inference that justifies it.


1. (H ꓦ I) ⊃ [J ⋅ (K ⋅ L)]
2. I
∴ J ⋅ K
3. I ꓦ H
4. H ꓦ I
5. J ⋅ (K ⋅ L)
6. (J ⋅ K) ⋅ L
7. J ⋅ K

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