Exercises 71-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.
b. Based on your work in Exercises 71-73(a), how does this system differ from those in Exercises 21-34?
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