Which one of the following statements is not true for integers?

Division is not commutative for integers because a÷b ≠ b÷a in general (e.g., 6÷3 = 2 but 3÷6 = 0.5). The other statements are true: multiplication is associative (a×b)×c = a×(b×c), 1 is the multiplicative identity (a×1 = a), and subtraction is not commutative (a-b ≠ b-a generally).