Question: Write the system of linear equations represented by the augmented matrix. Then use back substitution to solve the system. (Use variables x, y, and z,

Write the system of linear equations represented by the augmented matrix. Then use back substitution to solve the system. (Use variables x, y, and z, if applicable.)
1.

3 - 2 -1 -1 3 -9 1 10 -1 -2 -2

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