Theorem comraddd 7265

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

Hypotheses

Ref	Expression
comraddd.1	⊢ (𝜑 → 𝐵 ∈ ℂ)
comraddd.2	⊢ (𝜑 → 𝐶 ∈ ℂ)
comraddd.3	⊢ (𝜑 → 𝐴 = (𝐵 + 𝐶))

Assertion

Ref	Expression
comraddd	⊢ (𝜑 → 𝐴 = (𝐶 + 𝐵))

Proof of Theorem comraddd

Step	Hyp	Ref	Expression
1		comraddd.3	. 2 ⊢ (𝜑 → 𝐴 = (𝐵 + 𝐶))
2		comraddd.1	. . 3 ⊢ (𝜑 → 𝐵 ∈ ℂ)
3		comraddd.2	. . 3 ⊢ (𝜑 → 𝐶 ∈ ℂ)
4	2, 3	addcomd 7259	. 2 ⊢ (𝜑 → (𝐵 + 𝐶) = (𝐶 + 𝐵))
5	1, 4	eqtrd 2113	1 ⊢ (𝜑 → 𝐴 = (𝐶 + 𝐵))

Syntax hints:   → wi 4   = wceq 1284   ∈ wcel 1433  (class class class)co 5532  ℂcc 6979   + caddc 6984

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1376  ax-gen 1378  ax-4 1440  ax-17 1459  ax-ext 2063  ax-addcom 7076

This theorem depends on definitions:  df-bi 115  df-cleq 2074

This theorem is referenced by:  divalglemnn  10318