Within the world of mathematical operations, and more specifically, within that of algebra, one of the most common operations is that with matrices. And this is exactly what Linear Algebra lets you do.
Linear Algebra is a tool that lets you do all types of algebraic operations with matrices: adding, subtracting, multiplication, find the determinant, factors, find the inverse matrices, find a symetrical matrix, scale a matrix, etc.
Linear Algebra is a highly practical utility that will save you a lot of time and effort not having to this all manually.