Exercises 7173 will help you prepare for the material covered in the next section. In each exercise,
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Exercises 71–73 will help you prepare for the material covered in the next section. In each exercise, refer to the following system:
a. Select a value for z other than 0 or 1 and show that (12z + 1, 10z - 1, z) satisfies the system.
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3x-4y + 4z = 7 = x - у - 2z = 2 y 2x-3y + 6z = 5. =
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