## Intermediate Algebra (12th Edition)

The associative properties hold that $a+(b+c)=(a+b)+c$ and $a(bc)=(ab)c$ (for real numbers $a$, $b$, and $c$). Therefore, the associative property is used to change the grouping of three terms or factors. For example, the associative property holds that $1+(3+5)=(1+3)+5=4+5=9$.