Solving for x for two similar polygons

The video tutorial explains how to find proportions and solve for the variable X by identifying corresponding sides and setting up ratios. It demonstrates the application of cross products and the distribution method to solve equations, emphasizing the importance of correctly handling fractions and binomials. The tutorial concludes with the solution for X.

How can you express a whole number as a fraction, as mentioned in the text?

What does the teacher mean by multiplying fractions without using cross multiplication?