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Proof step 55 from proof gcd-rec (previous step)

abs(i) = i0 * abs(j) + j0, gcd(abs(i), abs(j)) * i1 = abs(j), gcd(abs(i), abs(j)) * i2 = abs(i), j0 < abs(j), 0 ≤ j0, 0 ≤ i0, gcd(abs(j), j0) < gcd(abs(i), abs(j)) ⊦ j = 0, gcd(abs(i), abs(j)) | gcd(abs(i), abs(j)) * i2 - i0 * abs(j)

User applied rule insert equation

And obtained the following new goals

Rule argument

pos: left 2 flags: rotate, [[2,2,2,2,2]]

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