In this lesson, the instructor goes over how to evaluate expressions with three variables by using specific values for each variable. The key takeaway is to remember to follow PEMDAS rules, including working on parentheses, exponents, multiplication and division, and addition and subtraction from left to right. By plugging in the values for each variable into the expression, students can simplify and determine the final value of the expression.
Evaluating an expression with three variables
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