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Theorem 1p0e1 7770
Description: 1 + 0 = 1. (Contributed by David A. Wheeler, 8-Dec-2018.)
Assertion
Ref Expression
1p0e1 (1 + 0) = 1

Proof of Theorem 1p0e1
StepHypRef Expression
1 ax-1cn 6736 . 2 1
21addid1i 6912 1 (1 + 0) = 1
Colors of variables: wff set class
Syntax hints:   = wceq 1242  (class class class)co 5455  0cc0 6671  1c1 6672   + caddc 6674
This theorem was proved from axioms:  ax-mp 7  ax-1cn 6736  ax-0id 6751
This theorem is referenced by:  bernneq  8982
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