This document discusses three methods for solving simultaneous linear algebraic equations: graphical method, Cramer's rule, and elimination of unknowns. The graphical method involves plotting the equations on a graph and finding their intersection point. Cramer's rule uses determinants to solve for one variable at a time. Elimination of unknowns treats the equations similarly to how single equations are solved, by adding or subtracting equations to eliminate variables until one is isolated. Examples are provided for each method.