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Theorem 9p1e10 7829
Description: 9 + 1 = 10. (Contributed by Mario Carneiro, 18-Apr-2015.)
Assertion
Ref Expression
9p1e10  9  +  1  10

Proof of Theorem 9p1e10
StepHypRef Expression
1 df-10 7761 . 2  10  9  +  1
21eqcomi 2041 1  9  +  1  10
Colors of variables: wff set class
Syntax hints:   wceq 1242  (class class class)co 5455   1c1 6712    + caddc 6714   9c9 7751   10c10 7752
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-10 7761
This theorem is referenced by: (None)
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