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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 12410 | . . . 4 ⊢ 4 ∈ ℕ0 | |
| 2 | 2nn 12208 | . . . 4 ⊢ 2 ∈ ℕ | |
| 3 | 1, 2 | decnncl 12618 | . . 3 ⊢ ;42 ∈ ℕ |
| 4 | 3 | decnncl2 12622 | . 2 ⊢ ;;420 ∈ ℕ |
| 5 | 8nn 12230 | . 2 ⊢ 8 ∈ ℕ | |
| 6 | 4nn 12218 | . 2 ⊢ 4 ∈ ℕ | |
| 7 | 8nn0 12414 | . . . 4 ⊢ 8 ∈ ℕ0 | |
| 8 | 7, 6 | decnncl 12618 | . . 3 ⊢ ;84 ∈ ℕ |
| 9 | 8 | decnncl2 12622 | . 2 ⊢ ;;840 ∈ ℕ |
| 10 | 420gcd8e4 42109 | . 2 ⊢ (;;420 gcd 8) = 4 | |
| 11 | eqid 2733 | . 2 ⊢ (4 · ;;840) = (4 · ;;840) | |
| 12 | 4, 5 | mulcomnni 42090 | . . . . 5 ⊢ (;;420 · 8) = (8 · ;;420) |
| 13 | 4t2e8 12298 | . . . . . 6 ⊢ (4 · 2) = 8 | |
| 14 | 13 | oveq1i 7365 | . . . . 5 ⊢ ((4 · 2) · ;;420) = (8 · ;;420) |
| 15 | 12, 14 | eqtr4i 2759 | . . . 4 ⊢ (;;420 · 8) = ((4 · 2) · ;;420) |
| 16 | 6, 2, 4 | mulassnni 42089 | . . . 4 ⊢ ((4 · 2) · ;;420) = (4 · (2 · ;;420)) |
| 17 | 15, 16 | eqtri 2756 | . . 3 ⊢ (;;420 · 8) = (4 · (2 · ;;420)) |
| 18 | 2 | nnnn0i 12399 | . . . . 5 ⊢ 2 ∈ ℕ0 |
| 19 | 3 | nnnn0i 12399 | . . . . 5 ⊢ ;42 ∈ ℕ0 |
| 20 | 0nn0 12406 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
| 21 | eqid 2733 | . . . . 5 ⊢ ;;420 = ;;420 | |
| 22 | eqid 2733 | . . . . . . 7 ⊢ ;42 = ;42 | |
| 23 | 4cn 12220 | . . . . . . . . . 10 ⊢ 4 ∈ ℂ | |
| 24 | 2cn 12210 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 25 | 23, 24, 13 | mulcomli 11131 | . . . . . . . . 9 ⊢ (2 · 4) = 8 |
| 26 | 25 | oveq1i 7365 | . . . . . . . 8 ⊢ ((2 · 4) + 0) = (8 + 0) |
| 27 | 8cn 12232 | . . . . . . . . 9 ⊢ 8 ∈ ℂ | |
| 28 | 27 | addridi 11310 | . . . . . . . 8 ⊢ (8 + 0) = 8 |
| 29 | 26, 28 | eqtri 2756 | . . . . . . 7 ⊢ ((2 · 4) + 0) = 8 |
| 30 | 2t2e4 12294 | . . . . . . . 8 ⊢ (2 · 2) = 4 | |
| 31 | 1 | dec0h 12620 | . . . . . . . . 9 ⊢ 4 = ;04 |
| 32 | 31 | eqcomi 2742 | . . . . . . . 8 ⊢ ;04 = 4 |
| 33 | 30, 32 | eqtr4i 2759 | . . . . . . 7 ⊢ (2 · 2) = ;04 |
| 34 | 18, 1, 18, 22, 1, 20, 29, 33 | decmul2c 12664 | . . . . . 6 ⊢ (2 · ;42) = ;84 |
| 35 | 23 | addridi 11310 | . . . . . 6 ⊢ (4 + 0) = 4 |
| 36 | 7, 1, 20, 34, 35 | decaddi 12658 | . . . . 5 ⊢ ((2 · ;42) + 0) = ;84 |
| 37 | 2t0e0 12299 | . . . . . 6 ⊢ (2 · 0) = 0 | |
| 38 | 20 | dec0h 12620 | . . . . . . 7 ⊢ 0 = ;00 |
| 39 | 38 | eqcomi 2742 | . . . . . 6 ⊢ ;00 = 0 |
| 40 | 37, 39 | eqtr4i 2759 | . . . . 5 ⊢ (2 · 0) = ;00 |
| 41 | 18, 19, 20, 21, 20, 20, 36, 40 | decmul2c 12664 | . . . 4 ⊢ (2 · ;;420) = ;;840 |
| 42 | 41 | oveq2i 7366 | . . 3 ⊢ (4 · (2 · ;;420)) = (4 · ;;840) |
| 43 | 17, 42 | eqtri 2756 | . 2 ⊢ (;;420 · 8) = (4 · ;;840) |
| 44 | 4, 5, 6, 9, 10, 11, 43 | lcmeprodgcdi 42110 | 1 ⊢ (;;420 lcm 8) = ;;840 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 (class class class)co 7355 0cc0 11016 + caddc 11019 · cmul 11021 2c2 12190 4c4 12192 8c8 12196 ;cdc 12598 lcm clcm 16509 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7677 ax-cnex 11072 ax-resscn 11073 ax-1cn 11074 ax-icn 11075 ax-addcl 11076 ax-addrcl 11077 ax-mulcl 11078 ax-mulrcl 11079 ax-mulcom 11080 ax-addass 11081 ax-mulass 11082 ax-distr 11083 ax-i2m1 11084 ax-1ne0 11085 ax-1rid 11086 ax-rnegex 11087 ax-rrecex 11088 ax-cnre 11089 ax-pre-lttri 11090 ax-pre-lttrn 11091 ax-pre-ltadd 11092 ax-pre-mulgt0 11093 ax-pre-sup 11094 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7312 df-ov 7358 df-oprab 7359 df-mpo 7360 df-om 7806 df-2nd 7931 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-er 8631 df-en 8879 df-dom 8880 df-sdom 8881 df-sup 9336 df-inf 9337 df-pnf 11158 df-mnf 11159 df-xr 11160 df-ltxr 11161 df-le 11162 df-sub 11356 df-neg 11357 df-div 11785 df-nn 12136 df-2 12198 df-3 12199 df-4 12200 df-5 12201 df-6 12202 df-7 12203 df-8 12204 df-9 12205 df-n0 12392 df-z 12479 df-dec 12599 df-uz 12743 df-rp 12901 df-fl 13706 df-mod 13784 df-seq 13919 df-exp 13979 df-cj 15016 df-re 15017 df-im 15018 df-sqrt 15152 df-abs 15153 df-dvds 16174 df-gcd 16416 df-lcm 16511 |
| This theorem is referenced by: lcm8un 42123 |
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