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Theorem 5p1e6 8825
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 8751 . 2 6 = (5 + 1)
21eqcomi 2121 1 (5 + 1) = 6
Colors of variables: wff set class
Syntax hints:   = wceq 1316  (class class class)co 5742  1c1 7589   + caddc 7591  5c5 8742  6c6 8743
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1408  ax-gen 1410  ax-ext 2099
This theorem depends on definitions:  df-bi 116  df-cleq 2110  df-6 8751
This theorem is referenced by:  8t8e64  9270  9t7e63  9276  5recm6rec  9293  fldiv4p1lem1div2  10046
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