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Answer:
u = 8/9, or 10/9
Explanation:
The absolute value equation resolves to two equations:
|u -1| = -1/9
u -1 = ±(-1/9)
u = 1 ± 1/9 = {8/9, 10/9}
The solutions are u = 8/9 and u = 10/9.
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