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Math Lessons

This is a series of mathematics lessons that will review the important topics in algebra. It is presented in videos by the Portland Community College

Math 65 - Lesson 1a
Systems of Linear Equations in Two Variables:
An Application of a System of Linear Equation.
What is a solution to a Systems of Linear Equations in Two Variables?

Math 65 - Lesson 1b
Solving Systems of Linear Equations in Two Variables by Substitution

Math 65 - Lesson 2a
Solving Systems of Linear Equations in Two Variables by Substitution:
Examples,
When is Substitution the best method?

Math 65 - Lesson 2b
Summary of Solving Systems of Linear Equations in Two Variables:
Special Cases,
Three Common Solution Methods

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