Systems of Equations - Unknowns And Linear Equations, Solutions Of Linear Equations, Systems In Three Or More Variables

Systems of equations are a group of relationships between various unknown variables which can be expressed in terms of algebraic expressions. The solutions for a simple system of equation can be obtained by graphing, substitution, and elimination addition. These methods became too cumbersome to be used for more complex systems however, and a method involving matrices is used to find solutions. Systems of equations have played an important part in the development of business and quicker methods for solutions continue to be explored.