## Intermediate Algebra (6th Edition)

$8y+4$
We are given the statement $4+8y=4y+8$, which is an incorrect application of the commutative property of addition. The commutative property of addition holds that $a+b=b+a$. In this example, $a=4$ and $b=8y$, so the statement should be $4+8y=8y+4$