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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 8170 | . 2 ⊢ 7 = (6 + 1) | |
2 | 1 | eqcomi 2086 | 1 ⊢ (6 + 1) = 7 |
Colors of variables: wff set class |
Syntax hints: = wceq 1285 (class class class)co 5543 1c1 7044 + caddc 7046 6c6 8160 7c7 8161 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1377 ax-gen 1379 ax-ext 2064 |
This theorem depends on definitions: df-bi 115 df-cleq 2075 df-7 8170 |
This theorem is referenced by: 9t8e72 8685 |
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