Question: use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solve the system by back substitution. 16. 2x1 + 5x2 +

use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solve the system by back substitution.

use elementary row operations to transform each augmented coefficient matrix to echelon

16. 2x1 + 5x2 + 12x3 = 6 3x1 + x2 + 5x3 = 12 5x1 + 8x2 + 21x3 = 17

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