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Theorem 5p1e6 7825
Description: 5 + 1 = 6. (Contributed by Mario Carneiro, 18-Apr-2015.)
Assertion
Ref Expression
5p1e6  5  +  1  6

Proof of Theorem 5p1e6
StepHypRef Expression
1 df-6 7757 . 2  6  5  +  1
21eqcomi 2041 1  5  +  1  6
Colors of variables: wff set class
Syntax hints:   wceq 1242  (class class class)co 5455   1c1 6712    + caddc 6714   5c5 7747   6c6 7748
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-5 1333  ax-gen 1335  ax-ext 2019
This theorem depends on definitions:  df-bi 110  df-cleq 2030  df-6 7757
This theorem is referenced by:  8t8e64  8237  9t7e63  8243
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