Proof: Simplify Product 2

Let's prove the following theorem:

(a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = (a / b) ⋅ (c / d)

Proof:

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Proof Table
# Claim Reason
1 (a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d) (a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d)
2 ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d) = (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d)) ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d) = (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d))
3 (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d)) = (a / b) ⋅ (c / d) (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d)) = (a / b) ⋅ (c / d)
4 (a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = (a / b) ⋅ (c / d) if (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d)) = (a / b) ⋅ (c / d) and ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d) = (a ⋅ (1 / b)) ⋅ (c ⋅ (1 / d)) and (a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = ((a ⋅ (1 / b)) ⋅ c) ⋅ (1 / d), then (a ⋅ c) ⋅ ((1 / b) ⋅ (1 / d)) = (a / b) ⋅ (c / d)

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