What do you need to know in order to understand this video?
First of all, to make your life much easier when solving a matrix, make sure to use a pencil. It will save any student a great amount of time in case a mistake is to occur. Secondly, highlight the rows in the order of the Gauss-Jordan elimination process. Lastly, solve the equation using your graphing calculator using rref, to guide you through the equation and help you to stop in your tracks in case you make a mistake.
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