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Mathematics, 18.12.2020 14:00 glowbaby123

The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system. [1 0 0 0| 9/4]
[0 1 0 0| 3/5]
[0 0 1 0| 2/3]
[0 0 0 1| -9/5]

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