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Theorem 9p1e10 10692
Description: 9 + 1 = 10. (Contributed by Mario Carneiro, 18-Apr-2015.)
Assertion
Ref Expression
9p1e10

Proof of Theorem 9p1e10
StepHypRef Expression
1 df-10 10627 . 2
21eqcomi 2470 1
Colors of variables: wff setvar class
Syntax hints:  =wceq 1395  (class class class)co 6296  1c1 9514   caddc 9516  9c9 10617   c10 10618
This theorem is referenced by:  1259lem2  14614  1259lem3  14615  1259lem4  14616  2503lem2  14620  4001lem1  14623  4001lem2  14624  4001lem4  14626  9p1e10b  38021
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-ext 2435
This theorem depends on definitions:  df-bi 185  df-cleq 2449  df-10 10627
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