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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 12456 | . . . 4 ⊢ 4 ∈ ℕ0 | |
| 2 | 2nn 12254 | . . . 4 ⊢ 2 ∈ ℕ | |
| 3 | 1, 2 | decnncl 12664 | . . 3 ⊢ ;42 ∈ ℕ |
| 4 | 3 | decnncl2 12668 | . 2 ⊢ ;;420 ∈ ℕ |
| 5 | 8nn 12276 | . 2 ⊢ 8 ∈ ℕ | |
| 6 | 4nn 12264 | . 2 ⊢ 4 ∈ ℕ | |
| 7 | 8nn0 12460 | . . . 4 ⊢ 8 ∈ ℕ0 | |
| 8 | 7, 6 | decnncl 12664 | . . 3 ⊢ ;84 ∈ ℕ |
| 9 | 8 | decnncl2 12668 | . 2 ⊢ ;;840 ∈ ℕ |
| 10 | 420gcd8e4 42445 | . 2 ⊢ (;;420 gcd 8) = 4 | |
| 11 | eqid 2736 | . 2 ⊢ (4 · ;;840) = (4 · ;;840) | |
| 12 | 4, 5 | mulcomnni 42426 | . . . . 5 ⊢ (;;420 · 8) = (8 · ;;420) |
| 13 | 4t2e8 12344 | . . . . . 6 ⊢ (4 · 2) = 8 | |
| 14 | 13 | oveq1i 7377 | . . . . 5 ⊢ ((4 · 2) · ;;420) = (8 · ;;420) |
| 15 | 12, 14 | eqtr4i 2762 | . . . 4 ⊢ (;;420 · 8) = ((4 · 2) · ;;420) |
| 16 | 6, 2, 4 | mulassnni 42425 | . . . 4 ⊢ ((4 · 2) · ;;420) = (4 · (2 · ;;420)) |
| 17 | 15, 16 | eqtri 2759 | . . 3 ⊢ (;;420 · 8) = (4 · (2 · ;;420)) |
| 18 | 2 | nnnn0i 12445 | . . . . 5 ⊢ 2 ∈ ℕ0 |
| 19 | 3 | nnnn0i 12445 | . . . . 5 ⊢ ;42 ∈ ℕ0 |
| 20 | 0nn0 12452 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
| 21 | eqid 2736 | . . . . 5 ⊢ ;;420 = ;;420 | |
| 22 | eqid 2736 | . . . . . . 7 ⊢ ;42 = ;42 | |
| 23 | 4cn 12266 | . . . . . . . . . 10 ⊢ 4 ∈ ℂ | |
| 24 | 2cn 12256 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 25 | 23, 24, 13 | mulcomli 11154 | . . . . . . . . 9 ⊢ (2 · 4) = 8 |
| 26 | 25 | oveq1i 7377 | . . . . . . . 8 ⊢ ((2 · 4) + 0) = (8 + 0) |
| 27 | 8cn 12278 | . . . . . . . . 9 ⊢ 8 ∈ ℂ | |
| 28 | 27 | addridi 11333 | . . . . . . . 8 ⊢ (8 + 0) = 8 |
| 29 | 26, 28 | eqtri 2759 | . . . . . . 7 ⊢ ((2 · 4) + 0) = 8 |
| 30 | 2t2e4 12340 | . . . . . . . 8 ⊢ (2 · 2) = 4 | |
| 31 | 1 | dec0h 12666 | . . . . . . . . 9 ⊢ 4 = ;04 |
| 32 | 31 | eqcomi 2745 | . . . . . . . 8 ⊢ ;04 = 4 |
| 33 | 30, 32 | eqtr4i 2762 | . . . . . . 7 ⊢ (2 · 2) = ;04 |
| 34 | 18, 1, 18, 22, 1, 20, 29, 33 | decmul2c 12710 | . . . . . 6 ⊢ (2 · ;42) = ;84 |
| 35 | 23 | addridi 11333 | . . . . . 6 ⊢ (4 + 0) = 4 |
| 36 | 7, 1, 20, 34, 35 | decaddi 12704 | . . . . 5 ⊢ ((2 · ;42) + 0) = ;84 |
| 37 | 2t0e0 12345 | . . . . . 6 ⊢ (2 · 0) = 0 | |
| 38 | 20 | dec0h 12666 | . . . . . . 7 ⊢ 0 = ;00 |
| 39 | 38 | eqcomi 2745 | . . . . . 6 ⊢ ;00 = 0 |
| 40 | 37, 39 | eqtr4i 2762 | . . . . 5 ⊢ (2 · 0) = ;00 |
| 41 | 18, 19, 20, 21, 20, 20, 36, 40 | decmul2c 12710 | . . . 4 ⊢ (2 · ;;420) = ;;840 |
| 42 | 41 | oveq2i 7378 | . . 3 ⊢ (4 · (2 · ;;420)) = (4 · ;;840) |
| 43 | 17, 42 | eqtri 2759 | . 2 ⊢ (;;420 · 8) = (4 · ;;840) |
| 44 | 4, 5, 6, 9, 10, 11, 43 | lcmeprodgcdi 42446 | 1 ⊢ (;;420 lcm 8) = ;;840 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7367 0cc0 11038 + caddc 11041 · cmul 11043 2c2 12236 4c4 12238 8c8 12242 ;cdc 12644 lcm clcm 16557 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-sup 9355 df-inf 9356 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-n0 12438 df-z 12525 df-dec 12645 df-uz 12789 df-rp 12943 df-fl 13751 df-mod 13829 df-seq 13964 df-exp 14024 df-cj 15061 df-re 15062 df-im 15063 df-sqrt 15197 df-abs 15198 df-dvds 16222 df-gcd 16464 df-lcm 16559 |
| This theorem is referenced by: lcm8un 42459 |
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