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 Evaluating Algebraic Expressions An algebraic expression is a finite additive combination of any number of terms, such as . When each variable in an algebraic expression is replaced by a numerical number and applying the appropriate properties or rules to simply, the algebraic expression takes on a numerical value, such a process is called evaluating algebraic expression. It's like playing a game, there are certain rules we have to follow in order to evaluate an algebraic expression. The order of operations rules: 1. Perform all operations in parentheses first. 2 Simplify all exponential expressions. 3.Perform multiplication and division as they occur, moving from left to right. 4.Perform addition and subtraction as they occur, moving from left to right. Ex 1:Perform the indicated operation: . Sol: