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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 12451 | . . . 4 ⊢ 4 ∈ ℕ0 | |
| 2 | 2nn 12249 | . . . 4 ⊢ 2 ∈ ℕ | |
| 3 | 1, 2 | decnncl 12659 | . . 3 ⊢ ;42 ∈ ℕ |
| 4 | 3 | decnncl2 12663 | . 2 ⊢ ;;420 ∈ ℕ |
| 5 | 8nn 12271 | . 2 ⊢ 8 ∈ ℕ | |
| 6 | 4nn 12259 | . 2 ⊢ 4 ∈ ℕ | |
| 7 | 8nn0 12455 | . . . 4 ⊢ 8 ∈ ℕ0 | |
| 8 | 7, 6 | decnncl 12659 | . . 3 ⊢ ;84 ∈ ℕ |
| 9 | 8 | decnncl2 12663 | . 2 ⊢ ;;840 ∈ ℕ |
| 10 | 420gcd8e4 42506 | . 2 ⊢ (;;420 gcd 8) = 4 | |
| 11 | eqid 2741 | . 2 ⊢ (4 · ;;840) = (4 · ;;840) | |
| 12 | 4, 5 | mulcomnni 42487 | . . . . 5 ⊢ (;;420 · 8) = (8 · ;;420) |
| 13 | 4t2e8 12339 | . . . . . 6 ⊢ (4 · 2) = 8 | |
| 14 | 13 | oveq1i 7370 | . . . . 5 ⊢ ((4 · 2) · ;;420) = (8 · ;;420) |
| 15 | 12, 14 | eqtr4i 2767 | . . . 4 ⊢ (;;420 · 8) = ((4 · 2) · ;;420) |
| 16 | 6, 2, 4 | mulassnni 42486 | . . . 4 ⊢ ((4 · 2) · ;;420) = (4 · (2 · ;;420)) |
| 17 | 15, 16 | eqtri 2764 | . . 3 ⊢ (;;420 · 8) = (4 · (2 · ;;420)) |
| 18 | 2 | nnnn0i 12440 | . . . . 5 ⊢ 2 ∈ ℕ0 |
| 19 | 3 | nnnn0i 12440 | . . . . 5 ⊢ ;42 ∈ ℕ0 |
| 20 | 0nn0 12447 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
| 21 | eqid 2741 | . . . . 5 ⊢ ;;420 = ;;420 | |
| 22 | eqid 2741 | . . . . . . 7 ⊢ ;42 = ;42 | |
| 23 | 4cn 12261 | . . . . . . . . . 10 ⊢ 4 ∈ ℂ | |
| 24 | 2cn 12251 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 25 | 23, 24, 13 | mulcomli 11149 | . . . . . . . . 9 ⊢ (2 · 4) = 8 |
| 26 | 25 | oveq1i 7370 | . . . . . . . 8 ⊢ ((2 · 4) + 0) = (8 + 0) |
| 27 | 8cn 12273 | . . . . . . . . 9 ⊢ 8 ∈ ℂ | |
| 28 | 27 | addridi 11328 | . . . . . . . 8 ⊢ (8 + 0) = 8 |
| 29 | 26, 28 | eqtri 2764 | . . . . . . 7 ⊢ ((2 · 4) + 0) = 8 |
| 30 | 2t2e4 12335 | . . . . . . . 8 ⊢ (2 · 2) = 4 | |
| 31 | 1 | dec0h 12661 | . . . . . . . . 9 ⊢ 4 = ;04 |
| 32 | 31 | eqcomi 2750 | . . . . . . . 8 ⊢ ;04 = 4 |
| 33 | 30, 32 | eqtr4i 2767 | . . . . . . 7 ⊢ (2 · 2) = ;04 |
| 34 | 18, 1, 18, 22, 1, 20, 29, 33 | decmul2c 12705 | . . . . . 6 ⊢ (2 · ;42) = ;84 |
| 35 | 23 | addridi 11328 | . . . . . 6 ⊢ (4 + 0) = 4 |
| 36 | 7, 1, 20, 34, 35 | decaddi 12699 | . . . . 5 ⊢ ((2 · ;42) + 0) = ;84 |
| 37 | 2t0e0 12340 | . . . . . 6 ⊢ (2 · 0) = 0 | |
| 38 | 20 | dec0h 12661 | . . . . . . 7 ⊢ 0 = ;00 |
| 39 | 38 | eqcomi 2750 | . . . . . 6 ⊢ ;00 = 0 |
| 40 | 37, 39 | eqtr4i 2767 | . . . . 5 ⊢ (2 · 0) = ;00 |
| 41 | 18, 19, 20, 21, 20, 20, 36, 40 | decmul2c 12705 | . . . 4 ⊢ (2 · ;;420) = ;;840 |
| 42 | 41 | oveq2i 7371 | . . 3 ⊢ (4 · (2 · ;;420)) = (4 · ;;840) |
| 43 | 17, 42 | eqtri 2764 | . 2 ⊢ (;;420 · 8) = (4 · ;;840) |
| 44 | 4, 5, 6, 9, 10, 11, 43 | lcmeprodgcdi 42507 | 1 ⊢ (;;420 lcm 8) = ;;840 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1548 (class class class)co 7360 0cc0 11033 + caddc 11036 · cmul 11038 2c2 12231 4c4 12233 8c8 12237 ;cdc 12639 lcm clcm 16552 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 ax-pre-sup 11111 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 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 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-sup 9349 df-inf 9350 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-div 11803 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-z 12520 df-dec 12640 df-uz 12784 df-rp 12938 df-fl 13746 df-mod 13824 df-seq 13959 df-exp 14019 df-cj 15056 df-re 15057 df-im 15058 df-sqrt 15192 df-abs 15193 df-dvds 16217 df-gcd 16459 df-lcm 16554 |
| This theorem is referenced by: lcm8un 42520 |
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