Algebra-1

Question Analysis
This question tests the student's ability to apply both the associative and commutative properties to simplify an expression with variables.

Key Concept Explanation
The associative property of addition states that for any real numbers , , and , . The commutative property of addition states that . These properties allow us to regroup and reorder terms without changing the sum.

Step-by-step Solution
1. Start with the given expression:

Click "Show Answer" to reveal the answer and analysis