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Use Gauss-Jordan elimination to solve the following system,3x +9y+ 2z + 12w= 1x + 3y...

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Use Gauss-Jordan elimination to solve the following system,3x +9y+ 2z + 12w= 1x + 3y - 2z + 4w= 2.-2x - 6y - 10w= 0,

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