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Proof step 8 from proof rational-add-same (previous step)

⊦ rational(i, 1) + rational(i1, 1) = rational(i + i1, 0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
⊦ rational(i1 + i, 1) = rational(i + i1, 0)

Rule argument

Additional information

Used simplifier rules: int-add: ⊦ rational(i, 1) + rational(j, 1) = rational(i + j, 1);%add-asso: ⊦ (ri + rj) + rj0 = ri + rj + rj0;%add-comm: ⊦ ri + rj = rj + ri;