Find the determinant by row reduction to echelon form. 1 -1 9 6 0 1 -7 3 - 1 0 - 8 4 4 -4 30 0 Use row operations to reduce the matrix to echelon form. 1 - 1 9 6 1 -7 3 - 1 0 - 8 4 4 -4 30 0

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