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Theorem divcanap5 8673
Description: Cancellation of common factor in a ratio. (Contributed by Jim Kingdon, 25-Feb-2020.)
Assertion
Ref Expression
divcanap5  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( ( C  x.  A )  / 
( C  x.  B
) )  =  ( A  /  B ) )

Proof of Theorem divcanap5
StepHypRef Expression
1 dividap 8660 . . . 4  |-  ( ( C  e.  CC  /\  C #  0 )  ->  ( C  /  C )  =  1 )
21oveq1d 5892 . . 3  |-  ( ( C  e.  CC  /\  C #  0 )  ->  (
( C  /  C
)  x.  ( A  /  B ) )  =  ( 1  x.  ( A  /  B
) ) )
323ad2ant3 1020 . 2  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( ( C  /  C )  x.  ( A  /  B
) )  =  ( 1  x.  ( A  /  B ) ) )
4 simp3l 1025 . . 3  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  C  e.  CC )
5 simp1 997 . . 3  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  A  e.  CC )
6 simp3 999 . . 3  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( C  e.  CC  /\  C #  0 ) )
7 simp2 998 . . 3  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( B  e.  CC  /\  B #  0 ) )
8 divmuldivap 8671 . . 3  |-  ( ( ( C  e.  CC  /\  A  e.  CC )  /\  ( ( C  e.  CC  /\  C #  0 )  /\  ( B  e.  CC  /\  B #  0 ) ) )  ->  ( ( C  /  C )  x.  ( A  /  B
) )  =  ( ( C  x.  A
)  /  ( C  x.  B ) ) )
94, 5, 6, 7, 8syl22anc 1239 . 2  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( ( C  /  C )  x.  ( A  /  B
) )  =  ( ( C  x.  A
)  /  ( C  x.  B ) ) )
10 divclap 8637 . . . . 5  |-  ( ( A  e.  CC  /\  B  e.  CC  /\  B #  0 )  ->  ( A  /  B )  e.  CC )
11103expb 1204 . . . 4  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 ) )  ->  ( A  /  B )  e.  CC )
1211mulid2d 7978 . . 3  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 ) )  ->  ( 1  x.  ( A  /  B
) )  =  ( A  /  B ) )
13123adant3 1017 . 2  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( 1  x.  ( A  /  B
) )  =  ( A  /  B ) )
143, 9, 133eqtr3d 2218 1  |-  ( ( A  e.  CC  /\  ( B  e.  CC  /\  B #  0 )  /\  ( C  e.  CC  /\  C #  0 ) )  ->  ( ( C  x.  A )  / 
( C  x.  B
) )  =  ( A  /  B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 978    = wceq 1353    e. wcel 2148   class class class wbr 4005  (class class class)co 5877   CCcc 7811   0cc0 7813   1c1 7814    x. cmul 7818   # cap 8540    / cdiv 8631
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-in1 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4123  ax-pow 4176  ax-pr 4211  ax-un 4435  ax-setind 4538  ax-cnex 7904  ax-resscn 7905  ax-1cn 7906  ax-1re 7907  ax-icn 7908  ax-addcl 7909  ax-addrcl 7910  ax-mulcl 7911  ax-mulrcl 7912  ax-addcom 7913  ax-mulcom 7914  ax-addass 7915  ax-mulass 7916  ax-distr 7917  ax-i2m1 7918  ax-0lt1 7919  ax-1rid 7920  ax-0id 7921  ax-rnegex 7922  ax-precex 7923  ax-cnre 7924  ax-pre-ltirr 7925  ax-pre-ltwlin 7926  ax-pre-lttrn 7927  ax-pre-apti 7928  ax-pre-ltadd 7929  ax-pre-mulgt0 7930  ax-pre-mulext 7931
This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-fal 1359  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ne 2348  df-nel 2443  df-ral 2460  df-rex 2461  df-reu 2462  df-rmo 2463  df-rab 2464  df-v 2741  df-sbc 2965  df-dif 3133  df-un 3135  df-in 3137  df-ss 3144  df-pw 3579  df-sn 3600  df-pr 3601  df-op 3603  df-uni 3812  df-br 4006  df-opab 4067  df-id 4295  df-po 4298  df-iso 4299  df-xp 4634  df-rel 4635  df-cnv 4636  df-co 4637  df-dm 4638  df-iota 5180  df-fun 5220  df-fv 5226  df-riota 5833  df-ov 5880  df-oprab 5881  df-mpo 5882  df-pnf 7996  df-mnf 7997  df-xr 7998  df-ltxr 7999  df-le 8000  df-sub 8132  df-neg 8133  df-reap 8534  df-ap 8541  df-div 8632
This theorem is referenced by:  divcanap7  8680  divadddivap  8686  divcanap5d  8776  8th4div3  9140  flodddiv4  11941  pigt3  14350
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