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Proof step 12 from proof mkDecimal-negated (previous step)

⊦ mkDecimal(i, j).int + ~ mkDecimal(mkDecimal(i, j).int, mkDecimal(i, j).scale).int = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
⊦ mkDecimal(i, j).int = mkDecimal(mkDecimal(i, j).int, mkDecimal(i, j).scale).int

Rule argument

Additional information

Used simplifier rules: add-zero: ⊦ i + 0 = i; from specification int-basic2%sub-eq: ⊦ i - j = i0 ↔ i = i0 + j; from specification int-abs%add-c: ⊦ i + j = j + i; from specification int-basic2%add-a: ⊦ i + j + i0 = (i + j) + i0; from specification int-basic2%neg-15: ⊦ i + ~ j = i - j; from specification int-abs