September 11, 2009
No CommentsHow to Solve Systems of Equations by Substitution
Description
A detailed tutorial on how to solve systems of equations using substitution. Step by step tutorial including several examples of how to solve systems of equations using substitution for reference.
Overview
There are two different ways to solve systems of equations – substitution and elimination. We will focus on substitution. Substitution is when you take one equation in you system of equations,and solve for one of the variables. You then plug the solution in for your variable in the other equation, and solve for the value of the remaining variable. You can then take the number only solution and insert it into your solution for the first variable you solved for. It is very easy to come up with no solution when using the substitution formula, because it relies very heavily on your algebra skills, and even the best mathematicians miss things sometimes. But as long as you pay attention to detail you shouldn’t have any problem using this method of solving for systems of equations.
