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Mirrors > Home > ILE Home > Th. List > 6p1e7 | GIF version |
Description: 6 + 1 = 7. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Ref | Expression |
---|---|
6p1e7 | ⊢ (6 + 1) = 7 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-7 8935 | . 2 ⊢ 7 = (6 + 1) | |
2 | 1 | eqcomi 2174 | 1 ⊢ (6 + 1) = 7 |
Colors of variables: wff set class |
Syntax hints: = wceq 1348 (class class class)co 5851 1c1 7768 + caddc 7770 6c6 8926 7c7 8927 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1440 ax-gen 1442 ax-ext 2152 |
This theorem depends on definitions: df-bi 116 df-cleq 2163 df-7 8935 |
This theorem is referenced by: 9t8e72 9463 |
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