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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 9013 | . 2 ⊢ 7 = (6 + 1) | |
2 | 1 | eqcomi 2193 | 1 ⊢ (6 + 1) = 7 |
Colors of variables: wff set class |
Syntax hints: = wceq 1364 (class class class)co 5896 1c1 7842 + caddc 7844 6c6 9004 7c7 9005 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1458 ax-gen 1460 ax-ext 2171 |
This theorem depends on definitions: df-bi 117 df-cleq 2182 df-7 9013 |
This theorem is referenced by: 9t8e72 9541 |
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