Commutative and Associative Properties

EXAMPLE 7.5

Use the commutative properties to rewrite the following expressions:

(a) $-1+3=\$ _________

(b) $4 \cdot 9=$ _________

EXAMPLE 7.6

Use the associative properties to rewrite the following:

(a) $(3+0.6)+0.4=$ ________

(b) $\left(-4 \cdot \frac{2}{5}\right) \cdot 15=$ ________

EXAMPLE 7.7

Use the Associative Property of Multiplication to simplify: $6(3 x)$.