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Theorem 5p1e6 8607
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 8539 . 2 6 = (5 + 1)
21eqcomi 2093 1 (5 + 1) = 6
Colors of variables: wff set class
Syntax hints:   = wceq 1290  (class class class)co 5666  1c1 7405   + caddc 7407  5c5 8530  6c6 8531
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1382  ax-gen 1384  ax-ext 2071
This theorem depends on definitions:  df-bi 116  df-cleq 2082  df-6 8539
This theorem is referenced by:  8t8e64  9051  9t7e63  9057  fldiv4p1lem1div2  9766
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