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Equations & Systemshard
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Solve: 1x−1−2x+1=1(x−1)(x+1)\frac{1}{x - 1} - \frac{2}{x + 1} = \frac{1}{(x - 1)(x + 1)}x−11​−x+12​=(x−1)(x+1)1​

What is the sum of all solutions?