# Chapter 1 - Foundations for Algebra - 1-4 Properties of Real Numbers - Practice and Problem-Solving Exercises - Page 27: 22

$9+105x$

#### Work Step by Step

We start with the given expression: $(4+105x)+5$ The commutative property of addition states that changing the order of the addends does not affect the sum. We use this property to rearrange the addends: $5+(4+105x)$ The associative property of addition states that changing the grouping of the addends does not affect the sum. We use this property to change the grouping of the addends: $(5+4)+105x$ We use the order of operations to simplify. We simplify inside the parentheses: $9+105x$

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