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Proof step 5 from proof factor-rat (previous step)

⊦ j ≠ 0 ∧ i1 ≠ 0 → rational(i1 * i, i1 * j) = rational(i, j)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

name: factor-rat-01 rotate: F subst: [j, i, i1] → [j, i, i1]

Additional information

Used terms: j, i, i1