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![](img5.gif)
![](img6.gif)
I must interchange (2') and (3') before proceeding.
![](img7.gif)
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For best accuracy: always use the pivot with the largest
absolute magnitude that you can.
![](img9.gif)
![](img10.gif)
![](img11.gif)
![](img12.gif)
![](img13.gif)
![](img14.gif)
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Next: Reduction Algorithm
Up: Gaussian elimination
Previous: Rectangular systems