Theorem adddirp1d 8342

Description: Distributive law, plus 1 version. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

Hypotheses

Ref	Expression
adddirp1d.a	|- ( ph -> A e. CC )
adddirp1d.b	|- ( ph -> B e. CC )

Assertion

Ref	Expression
adddirp1d	|- ( ph -> ( ( A + 1 ) x. B ) = ( ( A x. B ) + B ) )

Proof of Theorem adddirp1d

Step	Hyp	Ref	Expression
1		adddirp1d.a	. . 3 |- ( ph -> A e. CC )
2		1cnd 8332	. . 3 |- ( ph -> 1 e. CC )
3		adddirp1d.b	. . 3 |- ( ph -> B e. CC )
4	1, 2, 3	adddird 8341	. 2 |- ( ph -> ( ( A + 1 ) x. B ) = ( ( A x. B ) + ( 1 x. B ) ) )
5	3	mullidd 8334	. . 3 |- ( ph -> ( 1 x. B ) = B )
6	5	oveq2d 6091	. 2 |- ( ph -> ( ( A x. B ) + ( 1 x. B ) ) = ( ( A x. B ) + B ) )
7	4, 6	eqtrd 2271	1 |- ( ph -> ( ( A + 1 ) x. B ) = ( ( A x. B ) + B ) )

Syntax hints:   -> wi 4   = wceq 1402   e. wcel 2209  (class class class)co 6075   CCcc 8167   1c1 8170   + caddc 8172   x. cmul 8174

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-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-resscn 8261  ax-1cn 8262  ax-icn 8264  ax-addcl 8265  ax-mulcl 8267  ax-mulcom 8270  ax-mulass 8272  ax-distr 8273  ax-1rid 8276  ax-cnre 8280

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-br 4126  df-iota 5332  df-fv 5380  df-ov 6078

This theorem is referenced by:  modqvalp1  10758  hashxp  11245  fsumconst  12199  divalglemnqt  12665  pcexp  13066  mulgnnass  13937  cnfldmulg  14885  2lgsoddprmlem3d  16143