Write the system of linear equations which has    −9 9 4 23   7 5 6 −14 2 7 3 −85 as its corresponding augmented matrix. Assume x, y, and z are the variables corresponding to columns one, two, and three, respectively. All variables should be entered on the left-hand side of the equals sign and only constants are allowed on the right. (The equations must be in the same order as in the given augmented matrix. If there are no variables or constants, enter 0 into the respective answer blank.)

Write the system of linear equations which has   as its corresponding augmented matrix.

Assume x, y, and z are the variables corresponding to columns one, two, and three, respectively. All variables should be entered on the left-hand side of the equals sign and only constants are allowed on the right. (The equations must be in the same order as in the given augmented matrix. If there are no variables or constants, enter 0 into the respective answer blank.)

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