Solve for x:

1. 3x – 3 = 5 – x

2. 1/2 – 1/x = 1/x

3. x^{4} – 1 = 0

4. 5x^{2} – 3 = 2x

5. (x^{2} – 2x – 3)/(x + 1) = 0

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Solve for x:

1. 3x – 3 = 5 – x

2. 1/2 – 1/x = 1/x

3. x^{4} – 1 = 0

4. 5x^{2} – 3 = 2x

5. (x^{2} – 2x – 3)/(x + 1) = 0