👉 Subtotally is a term used in mathematical notation for a system that has exactly one solution and no solutions. It is often used to describe systems where the equations defining the system are linearly independent, but there exists at least one point of intersection between the lines defined by those equations. In mathematical terms, subtotally means that every point on the line of intersection of two given lines (lines in a plane) has exactly one solution. This is because if there were more than one solution,