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When solving many equations you usually stuff them in matrices and solve them using Gauss-Jordan elimination. Where I come from, we write it like this and this is what should appear in my document:
The gray parts of image are there for clarity and are not part of what I need. I just need
(n+1) x n matrix with separation line. I will also need to display multiple of the matrices next to each other to show the GEM process:
How can I do it?