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Proof step 45 from proof gcd-rec-sub-03 (previous step)

abs(i) - (abs(i) - abs(i0)) = abs(i0), abs(i) - abs(i0) < abs(i), 0 < abs(i) - abs(i0), i < 0 ⊦ gcd(abs(i), abs(i) - (abs(i) - abs(i0))) = gcd(abs(i) - abs(i0), abs(i0)), i0 < 0, abs(i) < i0, 0 < i ∧ i < i0 + i

User applied rule insert equation

And obtained the following new goals

Rule argument

pos: left 1 flags: discard

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