divmuleq - Metamath Proof Explorer

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Theorem divmuleq 10730

Description: Cross-multiply in an equality of ratios. (Contributed by Mario Carneiro, 23-Feb-2014.)

**Assertion**
Ref	Expression
divmuleq	$/\$ $/\$ $/\$ $/\$ $/\$

**Proof of Theorem divmuleq**
Step	Hyp	Ref	Expression
1		divcl 10691	. . . . 5 $/\$ $/\$
2	1	3expb 1266	. . . 4 $/\$ $/\$
3	2	ad2ant2r 783	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
4		divcl 10691	. . . . 5 $/\$ $/\$
5	4	3expb 1266	. . . 4 $/\$ $/\$
6	5	ad2ant2l 782	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
7		mulcl 10020	. . . . . 6 $/\$
8	7	ad2ant2r 783	. . . . 5 $/\$ $/\$ $/\$
9		mulne0 10669	. . . . 5 $/\$ $/\$ $/\$
10	8, 9	jca 554	. . . 4 $/\$ $/\$ $/\$ $/\$
11	10	adantl 482	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
12		mulcan2 10665	. . 3 $/\$ $/\$ $/\$
13	3, 6, 11, 12	syl3anc 1326	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
14		simprll 802	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
15		simprrl 804	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
16	3, 14, 15	mulassd 10063	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
17		divcan1 10694	. . . . . . 7 $/\$ $/\$
18	17	3expb 1266	. . . . . 6 $/\$ $/\$
19	18	ad2ant2r 783	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
20	19	oveq1d 6665	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
21	16, 20	eqtr3d 2658	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
22	14, 15	mulcomd 10061	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
23	22	oveq2d 6666	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
24	6, 15, 14	mulassd 10063	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
25		divcan1 10694	. . . . . . 7 $/\$ $/\$
26	25	3expb 1266	. . . . . 6 $/\$ $/\$
27	26	ad2ant2l 782	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
28	27	oveq1d 6665	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
29	23, 24, 28	3eqtr2d 2662	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
30	21, 29	eqeq12d 2637	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
31	13, 30	bitr3d 270	1 $/\$ $/\$ $/\$ $/\$ $/\$

Colors of variables: wff setvar class

Syntax hints:

wi 4

wb 196 $/\$ wa 384

wceq 1483

wcel 1990

wne 2794 (class class class)co 6650

cc 9934

cc0 9936

cmul 9941

cdiv 10684

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013

This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-po 5035 df-so 5036 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685

This theorem is referenced by: divmuleqd 10847