The video shows a person writing a mathematical equation on a white paper with a red pen. The person is using a red pen to write the equation and a blue pen to write the solution. The equation is written in black ink and the solution is written in blue ink. The person is writing the equation in a step-by-step manner, starting with the initial equation and then adding the solution. The person is using a red pen to write the solution and a blue pen to write the equation. The video is shot from a top-down perspective, showing the person's hand and the paper. The person's hand is steady, and the writing is clear and legible. The video ends with the person writing the final solution to the equation.