Proof: Multiply Reorder 2

Let's prove the following theorem:

(ab) ⋅ c = (bc) ⋅ a

Proof:

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Proof Table
# Claim Reason
1 ab = ba ab = ba
2 (ab) ⋅ c = (ba) ⋅ c if ab = ba, then (ab) ⋅ c = (ba) ⋅ c
3 (ba) ⋅ c = (bc) ⋅ a (ba) ⋅ c = (bc) ⋅ a
4 (ab) ⋅ c = (bc) ⋅ a if (ab) ⋅ c = (ba) ⋅ c and (ba) ⋅ c = (bc) ⋅ a, then (ab) ⋅ c = (bc) ⋅ a

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