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The row echelon form of an augmented matrix of a linear system with 3 equations in [1 0 0 1] the 3 unknowns is

The row echelon form of an augmented matrix of a linear system with 3 equations in [1 0 0 1] the 3 unknowns is 0 1 2 2. The solution of the system is lo o 0 3]

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