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| Mirrors > Home > MPE Home > Th. List > npcan1 | Structured version Visualization version Unicode version | ||
| Description: Cancellation law for subtraction and addition with 1. (Contributed by Alexander van der Vekens, 5-Oct-2018.) |
| Ref | Expression |
|---|---|
| npcan1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 22 |
. 2
| |
| 2 | 1cnd 10056 |
. 2
| |
| 3 | 1, 2 | npcand 10396 |
1
|
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