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Mirrors > Home > MPE Home > Th. List > Mathboxes > 420lcm8e840 | Structured version Visualization version GIF version |
Description: The lcm of 420 and 8 is 840. (Contributed by metakunt, 25-Apr-2024.) |
Ref | Expression |
---|---|
420lcm8e840 | ⊢ (;;420 lcm 8) = ;;840 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 4nn0 11904 | . . . 4 ⊢ 4 ∈ ℕ0 | |
2 | 2nn 11698 | . . . 4 ⊢ 2 ∈ ℕ | |
3 | 1, 2 | decnncl 12106 | . . 3 ⊢ ;42 ∈ ℕ |
4 | 3 | decnncl2 12110 | . 2 ⊢ ;;420 ∈ ℕ |
5 | 8nn 11720 | . 2 ⊢ 8 ∈ ℕ | |
6 | 4nn 11708 | . 2 ⊢ 4 ∈ ℕ | |
7 | 8nn0 11908 | . . . 4 ⊢ 8 ∈ ℕ0 | |
8 | 7, 6 | decnncl 12106 | . . 3 ⊢ ;84 ∈ ℕ |
9 | 8 | decnncl2 12110 | . 2 ⊢ ;;840 ∈ ℕ |
10 | 420gcd8e4 39294 | . 2 ⊢ (;;420 gcd 8) = 4 | |
11 | eqid 2798 | . 2 ⊢ (4 · ;;840) = (4 · ;;840) | |
12 | 4, 5 | mulcomnni 39275 | . . . . 5 ⊢ (;;420 · 8) = (8 · ;;420) |
13 | 4t2e8 11793 | . . . . . 6 ⊢ (4 · 2) = 8 | |
14 | 13 | oveq1i 7145 | . . . . 5 ⊢ ((4 · 2) · ;;420) = (8 · ;;420) |
15 | 12, 14 | eqtr4i 2824 | . . . 4 ⊢ (;;420 · 8) = ((4 · 2) · ;;420) |
16 | 6, 2, 4 | mulassnni 39274 | . . . 4 ⊢ ((4 · 2) · ;;420) = (4 · (2 · ;;420)) |
17 | 15, 16 | eqtri 2821 | . . 3 ⊢ (;;420 · 8) = (4 · (2 · ;;420)) |
18 | 2 | nnnn0i 11893 | . . . . 5 ⊢ 2 ∈ ℕ0 |
19 | 3 | nnnn0i 11893 | . . . . 5 ⊢ ;42 ∈ ℕ0 |
20 | 0nn0 11900 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
21 | eqid 2798 | . . . . 5 ⊢ ;;420 = ;;420 | |
22 | eqid 2798 | . . . . . . 7 ⊢ ;42 = ;42 | |
23 | 4cn 11710 | . . . . . . . . . 10 ⊢ 4 ∈ ℂ | |
24 | 2cn 11700 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
25 | 23, 24, 13 | mulcomli 10639 | . . . . . . . . 9 ⊢ (2 · 4) = 8 |
26 | 25 | oveq1i 7145 | . . . . . . . 8 ⊢ ((2 · 4) + 0) = (8 + 0) |
27 | 8cn 11722 | . . . . . . . . 9 ⊢ 8 ∈ ℂ | |
28 | 27 | addid1i 10816 | . . . . . . . 8 ⊢ (8 + 0) = 8 |
29 | 26, 28 | eqtri 2821 | . . . . . . 7 ⊢ ((2 · 4) + 0) = 8 |
30 | 2t2e4 11789 | . . . . . . . 8 ⊢ (2 · 2) = 4 | |
31 | 1 | dec0h 12108 | . . . . . . . . 9 ⊢ 4 = ;04 |
32 | 31 | eqcomi 2807 | . . . . . . . 8 ⊢ ;04 = 4 |
33 | 30, 32 | eqtr4i 2824 | . . . . . . 7 ⊢ (2 · 2) = ;04 |
34 | 18, 1, 18, 22, 1, 20, 29, 33 | decmul2c 12152 | . . . . . 6 ⊢ (2 · ;42) = ;84 |
35 | 23 | addid1i 10816 | . . . . . 6 ⊢ (4 + 0) = 4 |
36 | 7, 1, 20, 34, 35 | decaddi 12146 | . . . . 5 ⊢ ((2 · ;42) + 0) = ;84 |
37 | 2t0e0 11794 | . . . . . 6 ⊢ (2 · 0) = 0 | |
38 | 20 | dec0h 12108 | . . . . . . 7 ⊢ 0 = ;00 |
39 | 38 | eqcomi 2807 | . . . . . 6 ⊢ ;00 = 0 |
40 | 37, 39 | eqtr4i 2824 | . . . . 5 ⊢ (2 · 0) = ;00 |
41 | 18, 19, 20, 21, 20, 20, 36, 40 | decmul2c 12152 | . . . 4 ⊢ (2 · ;;420) = ;;840 |
42 | 41 | oveq2i 7146 | . . 3 ⊢ (4 · (2 · ;;420)) = (4 · ;;840) |
43 | 17, 42 | eqtri 2821 | . 2 ⊢ (;;420 · 8) = (4 · ;;840) |
44 | 4, 5, 6, 9, 10, 11, 43 | lcmeprodgcdi 39295 | 1 ⊢ (;;420 lcm 8) = ;;840 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 (class class class)co 7135 0cc0 10526 + caddc 10529 · cmul 10531 2c2 11680 4c4 11682 8c8 11686 ;cdc 12086 lcm clcm 15922 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-pre-sup 10604 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-sup 8890 df-inf 8891 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-z 11970 df-dec 12087 df-uz 12232 df-rp 12378 df-fl 13157 df-mod 13233 df-seq 13365 df-exp 13426 df-cj 14450 df-re 14451 df-im 14452 df-sqrt 14586 df-abs 14587 df-dvds 15600 df-gcd 15834 df-lcm 15924 |
This theorem is referenced by: lcm8un 39308 |
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