Khan Academy
Khan Academy: Algebra: Problem Solving Word Problems 2
A video that demonstrates how to set up and solve systems of equations in order to answer word problems. [12:20]
Khan Academy
Khan Academy: Algebra: Solving Systems by Substitution 3
This video demonstrates how to solve a system of linear equations by substitution. It also takes it a step further and graphs the system of equations on a coordinate grid. [6:04]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 1
This video demonstrates how to solve a system of linear equations using the elimination method. [3:38]
Khan Academy
Khan Academy: Algebra: Substitution Method 2
This video demonstrates how to solve a given system of equations by using substitution. [3:44]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination 3
This video demonstrates how to solve and graph a given system of equations by eliminating a variable. [4:58]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 4
This video demonstrates how to set up and solve a system of linear equations using the elimination method. [2:38]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 2
This video demonstrates how to solve a system of linear equations using the linear combination and elimination method. [4:25]
Khan Academy
Khan Academy: Algebra: Solving Systems by Substitution 1
This video demonstrates how to solve a system of linear equations by substitution. The sample problem given has no solution. [3:44]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 3
This video demonstrates how to solve a system of linear equations using the linear combination elimination method. Results in a dependent system. [5:05]
Khan Academy
Khan Academy: Algebra: Mixture Problems 2
This video demonstrates how to solve a mixture problem by setting up and solving a system of equations. [6:43]
Khan Academy
Khan Academy: Algebra: Systems of Three Variables
This video demonstrates how to solve a system comprised of three equations in three variables. [8:23]
Khan Academy
Khan Academy: Algebra: The Substitution Method
This video demonstrates how to solve a given system of equations by using substitution. [4:39]
Khan Academy
Khan Academy: Algebra: Substitution Method 3
This video demonstrates how to solve a word problem by setting up and solving a system of equations. Uses the substitution method. [5:58]
Khan Academy
Khan Academy: Algebra: Solving Systems by Substitution 2
This video demonstrates how to solve a system of linear equations by substitution. Example problem is of two equations in two variables. [4:06]
Khan Academy
Khan Academy: Algebra: Solving Systems of Equations by Multiplication
This video demonstrates more examples of how to solve systems of equations by elimination. The examples in this video require that one or both equations be scaled in order to eliminate a variable. [12:00]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination 2
This video demonstrates how to solve a system of linear equations by eliminating a variable. The given system is of two equations in two variables. [3:45]
Khan Academy
Khan Academy: Algebra: Solving Systems by Graphing 2
This video demonstrates how to use a graph in order to determine the number of solutions for a system of linear equations. [3:26]
Khan Academy
Khan Academy: Algebra: Solving Systems by Graphing 3
This video demonstrates how to graph a system of equations and identify how many solutions it has. [5:08]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination
This video demonstrates how to set up and solve a system of equations in order to solve a word problem. The system is solved using the elimination method. [5:51]
Khan Academy
Khan Academy: Algebra: Graphical Systems Application Problem
This video demonstrates how to solve a word problem that requires setting up and solving a system of equations. The problem requires that the system of equations be solved graphically. [5:19]
Khan Academy
Khan Academy: Algebra: Solving Linear Equations by Graphing
This video demonstrates how to solve systems of two equations by graphing each line and finding the point of intersection. [8:30]
Khan Academy
Khan Academy: Algebra: Graphings Systems of Equations
This video demonstrates how to solve a system of linear equations by graphing and finding the point of intersection. [6:35]
Khan Academy
Khan Academy: Algebra: Solving Linear Systems by Substitution
This video demonstrates how to solve a system of linear equations by using the substitution method. [9:21]
Khan Academy
Khan Academy: Algebra: Solving Systems of Equations by Elimination
This video gives two examples of how to solve systems of equations by elimination. The first example gives the system of equation to be solved and the second example is a word problem that involves setting up and solving the system of...