Simplifying an expression with four operations- Online Math Tutor-Simplify

The video tutorial explains how to simplify expressions using the order of operations, known as PEMDAS. It begins with operations inside parentheses, followed by handling exponents. The tutorial emphasizes the importance of performing multiplication and division before addition and subtraction, while maintaining a left-to-right order. The video concludes with a reminder of the PEMDAS rule.

Describe the order in which you should perform addition and subtraction when simplifying an expression.

How does the order of operations affect the outcome of an expression?