Simplify the given expression algebraically. 
Definitions:
Independent Variable
The experimental factor that is manipulated; the variable whose effect is being studied.
Replication
The process of repeating a study or experiment to verify its findings under the same or similar conditions.
Operational Definitions
Specific descriptions of concepts involving the criteria or operations used to measure them, making abstract ideas measurable and testable.
Anecdotal Evidence
Information based on personal accounts or individual cases rather than reliable research or systematic analysis.
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