Write the system of equations associated with the augmented matrix. Do not solve.

A. 7x + 6y + 7z = -2

8x+ 8z = 4
9x+ 9z = 2

B. 7x + 6y + 7z = -2
8x+ 8z = 4
9x + 9y= 2

C. 7x - 6y + 7z = -2
8x+ 8z = -4
9x + 9y = -2


Answer: B

Mathematics

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