Mathematics, 14.09.2019 06:30, alex24gonzales

for the following linear system, put the augmented coefficient matrix into reduced row-echelon form.
2x1 + 3x2 − x3 = 14
x1 + 2x2 + x3 = 4
5x1 + 9x2 + 2x3 = 7

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for the following linear system, put the augmented coefficient matrix into reduced row-echelon form....