Proof: Simplify4
Let's prove the following theorem:
((x ⋅ 4) ⋅ 2) - 4 = (x ⋅ 8) - 4
Proof:
| # | Claim | Reason |
|---|---|---|
| 1 | 4 ⋅ 2 = 8 | 4 ⋅ 2 = 8 |
| 2 | (x ⋅ 4) ⋅ 2 = x ⋅ (4 ⋅ 2) | (x ⋅ 4) ⋅ 2 = x ⋅ (4 ⋅ 2) |
| 3 | x ⋅ (4 ⋅ 2) = x ⋅ 8 | if 4 ⋅ 2 = 8, then x ⋅ (4 ⋅ 2) = x ⋅ 8 |
| 4 | (x ⋅ 4) ⋅ 2 = x ⋅ 8 | if x ⋅ (4 ⋅ 2) = x ⋅ 8 and (x ⋅ 4) ⋅ 2 = x ⋅ (4 ⋅ 2), then (x ⋅ 4) ⋅ 2 = x ⋅ 8 |
| 5 | ((x ⋅ 4) ⋅ 2) - 4 = (x ⋅ 8) - 4 | if (x ⋅ 4) ⋅ 2 = x ⋅ 8, then ((x ⋅ 4) ⋅ 2) - 4 = (x ⋅ 8) - 4 |
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