Subtract Zero Example
Subtract Zero Example 2

Proof: Subtract Zero Example 2

Let's prove the following theorem:

if f = a - 0, then f = a

Proof:

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Given
1 f = a - 0
Proof Table
# Claim Reason
1 a - 0 = a a - 0 = a
2 f = a if f = a - 0 and a - 0 = a, then f = a
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