In Exercises 912, write the system of linear equations represented by the augmented matrix. Use x, y,
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In Exercises 9–12, write the system of linear equations represented by the augmented matrix. Use x, y, and z, or, if necessary, w, x, y, and z, for the variables.
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4 1 5 1 -1 0 3 0 0 0 0 11 دیا 1 -18 74 5 3
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