# linear algebra

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solve using gauss jordan

10y − 4z + w = 1
x + 4y − z + w = 2
3x + 2y + z + 2w = 5
−2x − 8y + 2z − 2w = −4
x − 6y + 3z = 1

• linear algebra -

I see more equations (5) than unknowns (4). The problem could be overdetermined.
The last equation is a simple combination of the third and fourth. So there is a solution, but you don't need the x − 6y + 3z = 1 equation to get it.

For more about Gauss Jordan, see
http://aubuchon.jsc.vsc.edu/finiteNotes7SystemsUnique.htm

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