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Theorem adddid 8247
Description: Distributive law (left-distributivity). (Contributed by Mario Carneiro, 27-May-2016.)
Hypotheses
Ref Expression
addcld.1 (𝜑𝐴 ∈ ℂ)
addcld.2 (𝜑𝐵 ∈ ℂ)
addassd.3 (𝜑𝐶 ∈ ℂ)
Assertion
Ref Expression
adddid (𝜑 → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶)))

Proof of Theorem adddid
StepHypRef Expression
1 addcld.1 . 2 (𝜑𝐴 ∈ ℂ)
2 addcld.2 . 2 (𝜑𝐵 ∈ ℂ)
3 addassd.3 . 2 (𝜑𝐶 ∈ ℂ)
4 adddi 8207 . 2 ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶)))
51, 2, 3, 4syl3anc 1274 1 (𝜑 → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶)))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1398  wcel 2202  (class class class)co 6028  cc 8073   + caddc 8078   · cmul 8080
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-distr 8179
This theorem depends on definitions:  df-bi 117  df-3an 1007
This theorem is referenced by:  subdi  8607  mulreim  8827  apadd1  8831  conjmulap  8952  cju  9184  flhalf  10606  modqcyc  10665  addmodlteq  10704  binom2  10957  binom3  10963  sqoddm1div8  10999  bcpasc  11072  remim  11481  mulreap  11485  readd  11490  remullem  11492  imadd  11498  cjadd  11505  bdtrilem  11860  fsummulc2  12070  binomlem  12105  tanval3ap  12336  sinadd  12358  tanaddap  12361  bezoutlemnewy  12628  dvdsmulgcd  12657  lcmgcdlem  12710  pythagtriplem1  12899  pcaddlem  12973  mul4sqlem  13027  tangtx  15629  rpmulcxp  15700  rpcxpmul2  15704  binom4  15770  lgseisenlem2  15870  2lgsoddprmlem2  15905  2sqlem4  15917  2sqlem8  15922
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