What is the determinant of the coefficient matrix of the system? negative x minus y minus z is equal to negative 3 negative x minus y minus z is equal to 8 3 x plus 2 y plus z is equal to 0

The coefficient matrix is [−1, −1, −1; −1, −1, −1; 3, 2, 1]. Its first two rows are identical, so its determinant is 0. Therefore, the correct choice is B, 0.

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