In mathematical equations, what is referred to as the subject of the equation?

In mathematical equations, the term "subject of the equation" refers to the unknown variable that we are trying to solve for, which is often represented by a letter, such as x or y. This variable is the focal point of the equation, as it is the entity for which we seek a value through manipulation of other known values and constants within the equation.

When rearranging equations, the objective is often to isolate this subject on one side of the equation, enabling us to express its value clearly based on the other components involved in the equation. Understanding the subject of the equation is crucial for effectively solving mathematical problems, particularly in algebra and geometry, where the relationships among different variables play a vital role in finding solutions.