Proof: Distribute 4
Let's prove the following theorem:
(a ⋅ 2) + (a ⋅ 2) = a ⋅ 4
Proof:
# | Claim | Reason |
---|---|---|
1 | (a ⋅ 2) + (a ⋅ 2) = a ⋅ (2 + 2) | (a ⋅ 2) + (a ⋅ 2) = a ⋅ (2 + 2) |
2 | 2 + 2 = 4 | 2 + 2 = 4 |
3 | a ⋅ (2 + 2) = a ⋅ 4 | if 2 + 2 = 4, then a ⋅ (2 + 2) = a ⋅ 4 |
4 | (a ⋅ 2) + (a ⋅ 2) = a ⋅ 4 | if (a ⋅ 2) + (a ⋅ 2) = a ⋅ (2 + 2) and a ⋅ (2 + 2) = a ⋅ 4, then (a ⋅ 2) + (a ⋅ 2) = a ⋅ 4 |
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