This is an incomplete question, but I found the complete question online.
Complete question:
Write the augmented matrix for each system of equations.
9x - 4y - 5z = 9
7x + 4y - 4z = -1
6x - 6y + z = -5
Answer:
[tex]\left[\begin{array}{ccc}9&-4&-5|9\\7&4&-5|-1\\6&-6&1|-5\end{array}\right][/tex]
