## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$(2a)4=8a$
Show that $(2a)4$ is equivalent to $8a$. $(2a)4\longrightarrow$ Use the commutative property. =$4(2a)\longrightarrow$ Use the associative property. =$(4\times2)a\longrightarrow$ Simplify. =$8a$