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Solving systems with elimination

9 videos
2 skills
You can solve a system of equations with either substitution or elimination. This tutorial focuses with a ton of examples on elimination. It is covered in other tutorials, but we give you far more examples here. You'll learn best if you pause the videos and try to do the problem before Sal does.

Example 1: Solving systems by elimination

VIDEO 5:51 minutes
Solving systems by elimination

Example 2: Solving systems by elimination

VIDEO 3:45 minutes
Solving systems by elimination 2

Addition elimination method 1

VIDEO 3:38 minutes
Addition Elimination Method 1

Addition elimination method 2

VIDEO 4:26 minutes
Addition Elimination Method 2

Addition elimination method 3

VIDEO 5:05 minutes
Addition Elimination Method 3

Addition elimination method 4

VIDEO 2:38 minutes
Addition Elimination Method 4

Example 3: Solving systems by elimination

VIDEO 4:57 minutes
Solving systems by elimination 3

Simple elimination practice

VIDEO 4:18 minutes
Practice solving systems of equations through simple elimination (exercise at http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/e/systems_of_equations_with_elimination_0.5 )

Systems of equations with simple elimination

PRACTICE PROBLEMS
Solve systems of equation with one-step elimination (e.g., x-values or y-values cancel each other out).

Systems with elimination practice

VIDEO 5:31 minutes
Example of solving systems of equations with elimination

Systems of equations with elimination

PRACTICE PROBLEMS
Solving systems of equations with elimination.