Evaluate an expression with three variables

The video tutorial explains the concept of variables as unknowns in expressions and demonstrates how to evaluate expressions by assigning values to these variables. It covers the absolute value function, emphasizing its property of always yielding a positive result. The tutorial also discusses the importance of following the order of operations, using the PEMDAS rule, to correctly solve mathematical expressions.

How do you handle double negatives when evaluating expressions?

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What is the significance of plugging in values for variables in an expression?

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Can you explain the concept of evaluating an expression with multiple variables?

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