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| Mirrors > Home > ILE Home > Th. List > divsubdivap | Unicode version | ||
| Description: Subtraction of two ratios. (Contributed by Jim Kingdon, 26-Feb-2020.) |
| Ref | Expression |
|---|---|
| divsubdivap |
     ![/\](wedge.gif "/\"){kind=small}    #  
#   
 
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negcl 8098 |
. . . 4
 | |
| 2 | divadddivap 8623 |
. . . 4
#
#  | |
| 3 | 1, 2 | sylanl2 401 |
. . 3
#
# |
| 4 | simplr 520 |
. . . . . 6
#
# | |
| 5 | simprrl 529 |
. . . . . 6
#
# | |
| 6 | simprrr 530 |
. . . . . 6
#
# # | |
| 7 | divnegap 8602 |
. . . . . 6
# | |
| 8 | 4, 5, 6, 7 | syl3anc 1228 |
. . . . 5
#
# |
| 9 | 8 | oveq2d 5858 |
. . . 4
#
# |
| 10 | simpll 519 |
. . . . . 6
#
# | |
| 11 | simprll 527 |
. . . . . 6
#
# | |
| 12 | simprlr 528 |
. . . . . 6
#
# # | |
| 13 | divclap 8574 |
. . . . . 6
# | |
| 14 | 10, 11, 12, 13 | syl3anc 1228 |
. . . . 5
#
# |
| 15 | divclap 8574 |
. . . . . 6
# | |
| 16 | 4, 5, 6, 15 | syl3anc 1228 |
. . . . 5
#
# |
| 17 | 14, 16 | negsubd 8215 |
. . . 4
#
# |
| 18 | 9, 17 | eqtr3d 2200 |
. . 3
#
# |
| 19 | 3, 18 | eqtr3d 2200 |
. 2
#
# |
| 20 | 4, 11 | mulneg1d 8309 |
. . . . 5
#
#
|
| 21 | 20 | oveq2d 5858 |
. . . 4
#
#
|
| 22 | 10, 5 | mulcld 7919 |
. . . . 5
#
# |
| 23 | 4, 11 | mulcld 7919 |
. . . . 5
#
# |
| 24 | 22, 23 | negsubd 8215 |
. . . 4
#
#
|
| 25 | 21, 24 | eqtrd 2198 |
. . 3
#
#
|
| 26 | 25 | oveq1d 5857 |
. 2
#
#
|
| 27 | 19, 26 | eqtr3d 2200 |
1
#
#
|
| Colors of variables: wff set class |
| Syntax hints: wi 4
wa 103
wceq 1343
wcel 2136
class class class wbr 3982 (class class class)co 5842
cc 7751
cc0 7753
caddc 7756 cmul 7758 cmin 8069 cneg 8070 # cap 8479
cdiv 8568 |
| 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 604 ax-in2 605 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-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-mulrcl 7852 ax-addcom 7853 ax-mulcom 7854 ax-addass 7855 ax-mulass 7856 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-1rid 7860 ax-0id 7861 ax-rnegex 7862 ax-precex 7863 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-apti 7868 ax-pre-ltadd 7869 ax-pre-mulgt0 7870 ax-pre-mulext 7871 |
| This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rmo 2452 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-id 4271 df-po 4274 df-iso 4275 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-iota 5153 df-fun 5190 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-reap 8473 df-ap 8480 df-div 8569 |
| This theorem is referenced by: subrecap 8735 |
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