Question

Describe how to evaluate an expression that contains variables. Be specific.

Answer 1

You must substitute a number for each variable and carry out the arithmetic operations in order to evaluate an algebraic expression.

Explanation:

To determine the value of a variable expression: Replace the values for the variables in step 1.

2. List the grouping symbols, starting with the symbols closest to the center.

3. Determine the exponentiation rules and use them to simplify.

4. Evaluate. Use x to evaluate the expression.

Answer 2

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.

Explanation: