Equality Example
Zero Plus a
Zero Plus a 2

Proof: Additive Identity Variation 2

Let's prove the following theorem:

if the following are true:
  • a = 0
  • b = e

then a + b = e

Proof:

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Given
1 a = 0
2 b = e
Proof Table
# Claim Reason
1 a + b = 0 + e if a = 0 and b = e, then a + b = 0 + e
2 0 + e = e 0 + e = e
3 a + b = e if a + b = 0 + e and 0 + e = e, then a + b = e
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