Finding the value of x for a hexagon using interior sum theorem

The video tutorial explains how to calculate the sum of interior angles in a polygon, specifically a hexagon. The teacher guides students through setting up and solving an equation to find the value of X, representing an angle in the hexagon. The process involves combining like terms and simplifying the equation to reach the solution.

What steps did the teacher take to combine like terms in the equation?

How did the teacher arrive at the final value of X, and what is that value?