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Proof step 3 from proof add-c (previous step)

⊦ mkDecimal(dec_i.int * 10 ^ dec_j.scale + dec_j.int * 10 ^ dec_i.scale, dec_i.scale + dec_j.scale) = dec_j + dec_i

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: inst: name: add-def seq: ⊦ dec_i + dec_j = mkDecimal (dec_i.int * 10 ^ dec_j.scale + dec_j.int * 10 ^ dec_i.scale, dec_i.scale + dec_j.scale) subst: [dec_j, dec_i] → [dec_i, dec_j] flags: rewrite, current

Additional information

Used simplifier rules: add-c: ⊦ i + j = j + i; from specification int-basic2 Used terms: dec_i, dec_j