find the echelon of the matrices

2 -2  1 3 6

1 -1 -4 -3 -5

1 -3  2 -1 7
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2 Answers

(1 1 1 3)

(1 -1 1 1)

(1 5 1 11)

(5 1 5 11)
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how to do transformations with matrices
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