Evaluating expressions with & without parentheses video. Rules for Expressions Section 1 and Homework 1 Coursera. Order of Operations PEMDAS Definition & Examples Expii. Using Algebraic Operations to Solve Problems UniversalClass. In each step right, a rule for evaluating expressions is? Algebraic expressions.

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To evaluate an algebraic expression you have to substitute a number for each variable and perform the arithmetic operations In the example above the variable x is equal to 6 since 6 6 12 If we know the value of our variables we can replace the variables with their values and then evaluate the expression.