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Theorem 9p1e10 9870
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 9828 . 2  |-  10  =  ( 9  +  1 )
21eqcomi 2300 1  |-  ( 9  +  1 )  =  10
Colors of variables: wff set class
Syntax hints:    = wceq 1632  (class class class)co 5874   1c1 8754    + caddc 8756   9c9 9818   10c10 9819
This theorem is referenced by:  1259lem2  13146  1259lem3  13147  1259lem4  13148  2503lem2  13152  4001lem1  13155  4001lem2  13156  4001lem4  13158
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-ext 2277
This theorem depends on definitions:  df-bi 177  df-cleq 2289  df-10 9828
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