Introduction to Evaluating One-Step Algebraic Expressions

The video tutorial teaches how to evaluate one-step algebraic expressions by substituting a given number for the variable. It begins with an introduction to algebraic expressions, highlighting common mistakes like forgetting to substitute the variable. The tutorial then demonstrates evaluating expressions such as 9 minus x, 9 plus x, 9 divided by x, and 9 times x, using x=3. It further explores evaluating the expression 15 times x with different values for x, including 3, 4, and 10. The lesson concludes by summarizing the process of evaluating one-step expressions.

If x equals 4, what is the result of evaluating the expression 15 times x?

What do you get when you substitute x with 10 in the expression 15 times x?