Item 7.
True. Negative numbers work just fine for the divisibility relation. Here \(12 = -3 \cdot 4\text{.}\) It is also true that \(3 \mid -12\) and that \(-3 \mid -12\text{.}\)
True. Negative numbers work just fine for the divisibility relation. Here \(12 = -3 \cdot 4\text{.}\) It is also true that \(3 \mid -12\) and that \(-3 \mid -12\text{.}\)