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Theorem adddirp1d 7921
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 7911 . . 3  |-  ( ph  ->  1  e.  CC )
3 adddirp1d.b . . 3  |-  ( ph  ->  B  e.  CC )
41, 2, 3adddird 7920 . 2  |-  ( ph  ->  ( ( A  + 
1 )  x.  B
)  =  ( ( A  x.  B )  +  ( 1  x.  B ) ) )
53mulid2d 7913 . . 3  |-  ( ph  ->  ( 1  x.  B
)  =  B )
65oveq2d 5857 . 2  |-  ( ph  ->  ( ( A  x.  B )  +  ( 1  x.  B ) )  =  ( ( A  x.  B )  +  B ) )
74, 6eqtrd 2198 1  |-  ( ph  ->  ( ( A  + 
1 )  x.  B
)  =  ( ( A  x.  B )  +  B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1343    e. wcel 2136  (class class class)co 5841   CCcc 7747   1c1 7750    + caddc 7752    x. cmul 7754
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 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-ext 2147  ax-resscn 7841  ax-1cn 7842  ax-icn 7844  ax-addcl 7845  ax-mulcl 7847  ax-mulcom 7850  ax-mulass 7852  ax-distr 7853  ax-1rid 7856  ax-cnre 7860
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-nf 1449  df-sb 1751  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2296  df-ral 2448  df-rex 2449  df-v 2727  df-un 3119  df-in 3121  df-ss 3128  df-sn 3581  df-pr 3582  df-op 3584  df-uni 3789  df-br 3982  df-iota 5152  df-fv 5195  df-ov 5844
This theorem is referenced by:  modqvalp1  10274  hashxp  10735  fsumconst  11391  divalglemnqt  11853  pcexp  12237
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