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Solving systems with substitution
This tutorial is focused on solving systems through substitution. This is covered in several other tutorials, but this one focuses on substitution with more examples than you can shake a dog at. As always, pause the video and try to solve before Sal does.
Solving systems by substitution 1
Solving systems by substitution 2
Solving systems by substitution 3
The Substitution Method
Substitution Method 2
Substitution Method 3
Example doing Khan Academy systems of equations exercise at: http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/e/systems_of_equations_with_substitution
Solve systems of equations using substitution