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This is the last video in a series about systems of linear equations. This lesson looks at how to solve systems by substitution. Isolate (get by itself) one variable and plug the result into the other equation. Plug the answer back into one of the original equations.
Length:
05:43
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What are the steps to solve by substitution?
Solving a system of linear equations using substitution may seem confusing. There are a number of different approaches, but here is a guideline for steps to take. Similar to the discussion in the video the key is: 1) Write out ...