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Answers and rating deltas for
How to subtract rows from first row, per subject?
| Author | Votes | Δ |
|---|---|---|
| Tom | 1 | 0.00 |
Last visited: Feb 14, 2017, 2:27:53 PM
| Author | Votes | Δ |
|---|---|---|
| Tom | 1 | 0.00 |