In the video, a person is writing a mathematical equation on a piece of paper. The person starts by writing the equation and then proceeds to solve it. The video shows the person's hand holding a pen and writing on the paper. The person's hand is visible in the video, and the camera is focused on the paper where the equation is being written. The person's hand is steady, and the writing is clear and legible. The video ends with the person completing the solution to the equation.