Examples of Solving Systems of Equations Using the Elimination Method
The elimination method of solving a system of equations is demonstrated.
Solving Systems of Equations Using the Elimination Method by Adding
Explanation of the elimination method of solving a system of equations. Adding the equations to eliminate a variable is quicker than using the substitution method, but requires that both equations be in the same form and that the system contain an a...
Solving a Mixture Problem Using Two Variables
A word problem involving mixing a solution that needs to be 25 percent chlorine is analyzed, the unknown identified, and a two-variable system of equations written to solve the problem.
Some Problems are More Easily Solved Using Two Variables
A practical problem is presented that demonstrates a situation in which two variables and a system of equations is the easiest way to reach a solution.
Review of Techniques for Solving Systems of Equations
Review of techniques that can be used in solving systems of equations, including the elimination method and the substitution method.
Practical Problem: Wages of an Electrician and an Apprentice
Using the elimination method of calculate the hourly pay rates of an electrician and his apprentice on two different jobs given the total cost of each job.
More About Using Least Common Multiples
The least common multiple strategy reveals a system of equations that has not solution.
When the Elimination Method is Easiest
How to decide whether substitution or elimination is the better method for solving a system of equations when both equations are in the same form and neither has been solved for a variable.
Addition Property of Equality, The
The addition property of equality is explained and demonstrated.
Deciding Between Substitution and Elimination
How to decide whether substitution or elimination is the better method for solving a system of equations in which one equation has been solved for a variable.