Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables. Then use back-substitution to find the solution.
A. {(-8, -5, 8, -4)}
B. {(-102, 124, 25, -3)}
C. {(-3, 25, 124, -102)}
D. {(-6, 0, 13, -3)}
Answer: B
Mathematics
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