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ANAN

The given matrix represents an augmented matrix for a linear system. Write the corresponding
set of linear equations for the system, and use Gaussian elimination to solve the linear system.
Introduce free parameters as necessary.
a) [
1 4 −1
−2 −8 2
3 12 −3
0 0 0
] b) [
3 1 −2
−9 −3 6
6 2 1
]

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