Theorem comraddd 8430

Description: Commute RHS addition, in deduction form. (Contributed by David A. Wheeler, 11-Oct-2018.)

Hypotheses

Ref	Expression
comraddd.1	|- ( ph -> B e. CC )
comraddd.2	|- ( ph -> C e. CC )
comraddd.3	|- ( ph -> A = ( B + C ) )

Assertion

Ref	Expression
comraddd	|- ( ph -> A = ( C + B ) )

Proof of Theorem comraddd

Step	Hyp	Ref	Expression
1		comraddd.3	. 2 |- ( ph -> A = ( B + C ) )
2		comraddd.1	. . 3 |- ( ph -> B e. CC )
3		comraddd.2	. . 3 |- ( ph -> C e. CC )
4	2, 3	addcomd 8424	. 2 |- ( ph -> ( B + C ) = ( C + B ) )
5	1, 4	eqtrd 2265	1 |- ( ph -> A = ( C + B ) )

Syntax hints:   -> wi 4   = wceq 1398   e. wcel 2203  (class class class)co 6050   CCcc 8125   + caddc 8130

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1496  ax-gen 1498  ax-4 1559  ax-17 1575  ax-ext 2214  ax-addcom 8227

This theorem depends on definitions:  df-bi 117  df-cleq 2225

This theorem is referenced by:  mvrladdd  8640  hashfz  11186  bdtrilem  11924  clim2ser2  12023  fsumparts  12156  arisum  12184  divalglemnn  12604  phiprmpw  12919  mulgdir  13871  metrtri  15242  apdifflemr  16831