Chapter 5.2B, Problem 15A

Identify the property of integers being illustrated in each of the following.

a. $\left({}^{-}2\right)\left(3\right)\in I$

b. $\left({}^{-}4\right)\left(0\right)=0$

c. ${}^{-}2\left(3+4\right){=}^{-}2\left(3\right){+}^{-}2\left(4\right)$

d. $\left({}^{-}2\right)3=3\left({}^{-}2\right)$