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Theorem dmdcanap 8489
Description: Cancellation law for division and multiplication. (Contributed by Jim Kingdon, 26-Feb-2020.)
Assertion
Ref Expression
dmdcanap  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( ( A  /  B )  x.  ( C  /  A ) )  =  ( C  /  B ) )

Proof of Theorem dmdcanap
StepHypRef Expression
1 simp1l 1005 . . 3  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  A  e.  CC )
2 simp3 983 . . . 4  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  C  e.  CC )
3 simp1r 1006 . . . 4  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  A #  0 )
4 divclap 8445 . . . 4  |-  ( ( C  e.  CC  /\  A  e.  CC  /\  A #  0 )  ->  ( C  /  A )  e.  CC )
52, 1, 3, 4syl3anc 1216 . . 3  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( C  /  A
)  e.  CC )
6 simp2l 1007 . . 3  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  B  e.  CC )
7 simp2r 1008 . . 3  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  B #  0 )
8 div23ap 8458 . . 3  |-  ( ( A  e.  CC  /\  ( C  /  A
)  e.  CC  /\  ( B  e.  CC  /\  B #  0 ) )  ->  ( ( A  x.  ( C  /  A ) )  /  B )  =  ( ( A  /  B
)  x.  ( C  /  A ) ) )
91, 5, 6, 7, 8syl112anc 1220 . 2  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( ( A  x.  ( C  /  A
) )  /  B
)  =  ( ( A  /  B )  x.  ( C  /  A ) ) )
10 divcanap2 8447 . . . 4  |-  ( ( C  e.  CC  /\  A  e.  CC  /\  A #  0 )  ->  ( A  x.  ( C  /  A ) )  =  C )
112, 1, 3, 10syl3anc 1216 . . 3  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( A  x.  ( C  /  A ) )  =  C )
1211oveq1d 5789 . 2  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( ( A  x.  ( C  /  A
) )  /  B
)  =  ( C  /  B ) )
139, 12eqtr3d 2174 1  |-  ( ( ( A  e.  CC  /\  A #  0 )  /\  ( B  e.  CC  /\  B #  0 )  /\  C  e.  CC )  ->  ( ( A  /  B )  x.  ( C  /  A ) )  =  ( C  /  B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    /\ w3a 962    = wceq 1331    e. wcel 1480   class class class wbr 3929  (class class class)co 5774   CCcc 7625   0cc0 7627    x. cmul 7632   # cap 8350    / cdiv 8439
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-in1 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-sep 4046  ax-pow 4098  ax-pr 4131  ax-un 4355  ax-setind 4452  ax-cnex 7718  ax-resscn 7719  ax-1cn 7720  ax-1re 7721  ax-icn 7722  ax-addcl 7723  ax-addrcl 7724  ax-mulcl 7725  ax-mulrcl 7726  ax-addcom 7727  ax-mulcom 7728  ax-addass 7729  ax-mulass 7730  ax-distr 7731  ax-i2m1 7732  ax-0lt1 7733  ax-1rid 7734  ax-0id 7735  ax-rnegex 7736  ax-precex 7737  ax-cnre 7738  ax-pre-ltirr 7739  ax-pre-ltwlin 7740  ax-pre-lttrn 7741  ax-pre-apti 7742  ax-pre-ltadd 7743  ax-pre-mulgt0 7744  ax-pre-mulext 7745
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-fal 1337  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ne 2309  df-nel 2404  df-ral 2421  df-rex 2422  df-reu 2423  df-rmo 2424  df-rab 2425  df-v 2688  df-sbc 2910  df-dif 3073  df-un 3075  df-in 3077  df-ss 3084  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-br 3930  df-opab 3990  df-id 4215  df-po 4218  df-iso 4219  df-xp 4545  df-rel 4546  df-cnv 4547  df-co 4548  df-dm 4549  df-iota 5088  df-fun 5125  df-fv 5131  df-riota 5730  df-ov 5777  df-oprab 5778  df-mpo 5779  df-pnf 7809  df-mnf 7810  df-xr 7811  df-ltxr 7812  df-le 7813  df-sub 7942  df-neg 7943  df-reap 8344  df-ap 8351  df-div 8440
This theorem is referenced by:  dmdcanapd  8587
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