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Mirrors > Home > MPE Home > Th. List > npcand | Structured version Visualization version Unicode version |
Description: Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
negidd.1 |
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pncand.2 |
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Ref | Expression |
---|---|
npcand |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | negidd.1 |
. 2
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2 | pncand.2 |
. 2
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3 | npcan 9871 |
. 2
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4 | 1, 2, 3 | syl2anc 671 |
1
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