Solving System of Simultaneous Linear Equations

A system of simultaneous linear equations in two or three variables can be rewritten compactly as a single matrix equation, $AX = B$, where $A$ is the matrix of coefficients, $X$ is the column of unknowns, and $B$ is the column of constants on the right-hand side. Once the system is in this form, matrices give you several equivalent ways to solve it: using the inverse of the coefficient matrix, using **Cramer's rule …