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Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012) (Proof shortened by Wolf Lammen, 23-Jun-2022)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | simpll3 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp3 | ||
| 2 | 1 | ad2antrr |