| j ≠ 0, j = j0 / gcd(i0, j0) * gcd(j, i), i = i0 / gcd(i0, j0) * gcd(i, j), 0 < j0, 0 < j ⊦ i = 0, i0 = 0, j0 = 0, j = 0, i * j0 = i0 * j |
i = i0 / gcd(i0, j0) * gcd(i, j), j = j0 / gcd(i0, j0) * gcd(j, i), 0 < j, 0 < j0 ⊦ j = 0, i * j0 = i0 * j, j0 = 0, i0 = 0, i = 0
Used simplifier rules: ⊦ gcd(i, j) = gcd(j, i);