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To solve an algebraic expression, simplify the expression by combining like terms, isolate the variable on one side of the equation by using inverse operations. Then, solve the equation by finding the value of the variable that makes the equation true.
Evaluating an algebraic expression means to calculate the expression given a certain variable. Sometimes a problem will ask you to do this; most of the time, however, you will want to evaluate an expression to check your own algebra work.
In this section we will evaluate algebraic expressions for given values of the variables contained in the expressions.
Welcome to an “Intro to Evaluating Algebraic Expressions” with Mr. J! Need help with how to evaluate algebraic expressions?
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
In this section, we’ll evaluate expressions—again following the order of operations. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
To evaluate an algebraic expression means to determine the value of the expression for a given value of each variable in the expression. Replace each variable in the expression with the given value, then simplify the resulting expression using the order of operations.
Identify the parts of an algebraic expression. Apply the distributive property. Evaluate algebraic expressions. Use formulas that model common applications.
To evaluate an algebraic expression means to determine the value of the expression for a given value of each variable in the expression. Replace each variable in the expression with the given value then simplify the resulting expression using the order of operations.
Evaluating an algebraic expression means finding the value of the given expression when a variable is substituted with its value and then performing the arithmetic operations to get the result. Let us now evaluate the expression x + 2 for a) x = 15, b) x = 12