Final answer:
The statement '7x - 2 = 7x - 2' demonstrates the Reflexive Property of Equality, which asserts that any quantity is equal to itself, important for simplifying algebraic expressions.
Step-by-step explanation:
The statement 7x - 2 = 7x - 2 is justified by the Reflexive Property of Equality, which states that any quantity is equal to itself. This is a fundamental property in algebra that is often used when working on equations to simplify the algebra. It is always reasonable to say that any expression is equal to itself, and this helps to verify solutions to algebraic problems or to move forward in a stepwise fashion to solve equations.