Simplifying Numerical Expressions Using PEMDAS

The video tutorial explains how to simplify a numerical expression using the order of operations, commonly known as PEMDAS. The instructor presents a problem and guides viewers through solving it step-by-step, focusing on parentheses, exponents, multiplication, division, addition, and subtraction. The tutorial emphasizes the importance of following the correct order to arrive at the correct solution, which is identified as answer choice A, 18. The lesson concludes with a summary of the process and encourages viewers to continue learning math.

What is the significance of clearing parentheses first in mathematical expressions?

Describe how multiplication and division are treated in the order of operations.