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                                            Gilad Gressel

gaussian elimination - struggling to understand why it's allowed or how it works

no, i'm not actually worried about the right hand side I'm struggling to get why we are allowed to multiply the top equation and subtract it from the next. like...

gaussian elimination - struggling to understand why it's allowed or how it works

i guess this is what I want/need to read http://math.stackexchange.com/questions/648013/proof-of-gaussian-elimination-why-does-it-work > You are probably familiar with the fact that when working with a system of equations you can add multiples...

gaussian elimination - struggling to understand why it's allowed or how it works

hey! that makes total sense!! thank you! the key line for me was > On the left is easy enough, but how do we subtract 4x from the right in...