⊦ i % j < 0 → i |%| j = i % j + j
¬ i % j < 0, 0 < j + i, i < j, i < 0, 0 < j ⊦ i |%| j = i + j
i % j < 0, 0 < j + i, i < j, i < 0, 0 < j ⊦ i % j + j = i + j
Used terms: j, i