Solving Systems by Elimination (Part I)
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This video will explain when Elimination is a more efficient method for solving systems of linear equations, and how to do it. The example I go through in this video will have a variable in which the coefficients are opposites of each other. If you are looking for help with elimination when the coefficients are not the same, see Elimination videos parts 3 and 4.
The solution for the practice problem in this video is (10,-1).
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Timestamps:
00:00 Intro & when to use elimination
00:40 Why substitution is not the best method for this example
01:04 Adding the Equations to eliminate x
02:22 Solve for y
02:52 Use y to solve for x
04:23 Final Solution
04:38 Practice Problem for you!