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Theorem adddirp1d 7946
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
StepHypRef Expression
1 adddirp1d.a . . 3  |-  ( ph  ->  A  e.  CC )
2 1cnd 7936 . . 3  |-  ( ph  ->  1  e.  CC )
3 adddirp1d.b . . 3  |-  ( ph  ->  B  e.  CC )
41, 2, 3adddird 7945 . 2  |-  ( ph  ->  ( ( A  + 
1 )  x.  B
)  =  ( ( A  x.  B )  +  ( 1  x.  B ) ) )
53mulid2d 7938 . . 3  |-  ( ph  ->  ( 1  x.  B
)  =  B )
65oveq2d 5869 . 2  |-  ( ph  ->  ( ( A  x.  B )  +  ( 1  x.  B ) )  =  ( ( A  x.  B )  +  B ) )
74, 6eqtrd 2203 1  |-  ( ph  ->  ( ( A  + 
1 )  x.  B
)  =  ( ( A  x.  B )  +  B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1348    e. wcel 2141  (class class class)co 5853   CCcc 7772   1c1 7775    + caddc 7777    x. cmul 7779
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-ext 2152  ax-resscn 7866  ax-1cn 7867  ax-icn 7869  ax-addcl 7870  ax-mulcl 7872  ax-mulcom 7875  ax-mulass 7877  ax-distr 7878  ax-1rid 7881  ax-cnre 7885
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-br 3990  df-iota 5160  df-fv 5206  df-ov 5856
This theorem is referenced by:  modqvalp1  10299  hashxp  10761  fsumconst  11417  divalglemnqt  11879  pcexp  12263
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