Proof: Multiplicative Property of Equality Variation 1
Let's prove the following theorem:
if a = b, then c ⋅ a = c ⋅ b
Proof:
Given
1 | a = b |
---|
# | Claim | Reason |
---|---|---|
1 | a ⋅ c = b ⋅ c | if a = b, then a ⋅ c = b ⋅ c |
2 | b ⋅ c = c ⋅ b | b ⋅ c = c ⋅ b |
3 | a ⋅ c = c ⋅ b | if a ⋅ c = b ⋅ c and b ⋅ c = c ⋅ b, then a ⋅ c = c ⋅ b |
4 | c ⋅ a = a ⋅ c | c ⋅ a = a ⋅ c |
5 | c ⋅ a = c ⋅ b | if c ⋅ a = a ⋅ c and a ⋅ c = c ⋅ b, then c ⋅ a = c ⋅ b |
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