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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 12526 | . . . 4 ⊢ 4 ∈ ℕ0 | |
| 2 | 2nn 12317 | . . . 4 ⊢ 2 ∈ ℕ | |
| 3 | 1, 2 | decnncl 12738 | . . 3 ⊢ ;42 ∈ ℕ |
| 4 | 3 | decnncl2 12743 | . 2 ⊢ ;;420 ∈ ℕ |
| 5 | 8nn 12339 | . 2 ⊢ 8 ∈ ℕ | |
| 6 | 4nn 12327 | . 2 ⊢ 4 ∈ ℕ | |
| 7 | 8nn0 12530 | . . . 4 ⊢ 8 ∈ ℕ0 | |
| 8 | 7, 6 | decnncl 12738 | . . 3 ⊢ ;84 ∈ ℕ |
| 9 | 8 | decnncl2 12743 | . 2 ⊢ ;;840 ∈ ℕ |
| 10 | 420gcd8e4 42723 | . 2 ⊢ (;;420 gcd 8) = 4 | |
| 11 | eqid 2770 | . 2 ⊢ (4 · ;;840) = (4 · ;;840) | |
| 12 | 4, 5 | mulcomnni 42704 | . . . . 5 ⊢ (;;420 · 8) = (8 · ;;420) |
| 13 | 4t2e8 12412 | . . . . . 6 ⊢ (4 · 2) = 8 | |
| 14 | 13 | oveq1i 7424 | . . . . 5 ⊢ ((4 · 2) · ;;420) = (8 · ;;420) |
| 15 | 12, 14 | eqtr4i 2796 | . . . 4 ⊢ (;;420 · 8) = ((4 · 2) · ;;420) |
| 16 | 6, 2, 4 | mulassnni 42703 | . . . 4 ⊢ ((4 · 2) · ;;420) = (4 · (2 · ;;420)) |
| 17 | 15, 16 | eqtri 2793 | . . 3 ⊢ (;;420 · 8) = (4 · (2 · ;;420)) |
| 18 | 2 | nnnn0i 12515 | . . . . 5 ⊢ 2 ∈ ℕ0 |
| 19 | 3 | nnnn0i 12515 | . . . . 5 ⊢ ;42 ∈ ℕ0 |
| 20 | 0nn0 12522 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
| 21 | eqid 2770 | . . . . 5 ⊢ ;;420 = ;;420 | |
| 22 | eqid 2770 | . . . . . . 7 ⊢ ;42 = ;42 | |
| 23 | 4cn 12329 | . . . . . . . . . 10 ⊢ 4 ∈ ℂ | |
| 24 | 2cn 12319 | . . . . . . . . . 10 ⊢ 2 ∈ ℂ | |
| 25 | 23, 24, 13 | mulcomli 11221 | . . . . . . . . 9 ⊢ (2 · 4) = 8 |
| 26 | 25 | oveq1i 7424 | . . . . . . . 8 ⊢ ((2 · 4) + 0) = (8 + 0) |
| 27 | 8cn 12341 | . . . . . . . . 9 ⊢ 8 ∈ ℂ | |
| 28 | 27 | addridi 11400 | . . . . . . . 8 ⊢ (8 + 0) = 8 |
| 29 | 26, 28 | eqtri 2793 | . . . . . . 7 ⊢ ((2 · 4) + 0) = 8 |
| 30 | 2t2e4 12407 | . . . . . . . 8 ⊢ (2 · 2) = 4 | |
| 31 | 1 | dec0h 12741 | . . . . . . . . 9 ⊢ 4 = ;04 |
| 32 | 31 | eqcomi 2779 | . . . . . . . 8 ⊢ ;04 = 4 |
| 33 | 30, 32 | eqtr4i 2796 | . . . . . . 7 ⊢ (2 · 2) = ;04 |
| 34 | 18, 1, 18, 22, 1, 20, 29, 33 | decmul2c 12785 | . . . . . 6 ⊢ (2 · ;42) = ;84 |
| 35 | 23 | addridi 11400 | . . . . . 6 ⊢ (4 + 0) = 4 |
| 36 | 7, 1, 20, 34, 35 | decaddi 12779 | . . . . 5 ⊢ ((2 · ;42) + 0) = ;84 |
| 37 | 2t0e0 12414 | . . . . . 6 ⊢ (2 · 0) = 0 | |
| 38 | 20 | dec0h 12741 | . . . . . . 7 ⊢ 0 = ;00 |
| 39 | 38 | eqcomi 2779 | . . . . . 6 ⊢ ;00 = 0 |
| 40 | 37, 39 | eqtr4i 2796 | . . . . 5 ⊢ (2 · 0) = ;00 |
| 41 | 18, 19, 20, 21, 20, 20, 36, 40 | decmul2c 12785 | . . . 4 ⊢ (2 · ;;420) = ;;840 |
| 42 | 41 | oveq2i 7425 | . . 3 ⊢ (4 · (2 · ;;420)) = (4 · ;;840) |
| 43 | 17, 42 | eqtri 2793 | . 2 ⊢ (;;420 · 8) = (4 · ;;840) |
| 44 | 4, 5, 6, 9, 10, 11, 43 | lcmeprodgcdi 42724 | 1 ⊢ (;;420 lcm 8) = ;;840 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1568 (class class class)co 7414 0cc0 11103 + caddc 11106 · cmul 11108 2c2 12298 4c4 12300 8c8 12304 ;cdc 12714 lcm clcm 16649 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2152 ax-9 2160 ax-10 2183 ax-11 2199 ax-12 2220 ax-ext 2742 ax-sep 5262 ax-nul 5274 ax-pow 5340 ax-pr 5408 ax-un 7736 ax-cnex 11159 ax-resscn 11160 ax-1cn 11161 ax-icn 11162 ax-addcl 11163 ax-addrcl 11164 ax-mulcl 11165 ax-mulrcl 11166 ax-mulcom 11167 ax-addass 11168 ax-mulass 11169 ax-distr 11170 ax-i2m1 11171 ax-1ne0 11172 ax-1rid 11173 ax-rnegex 11174 ax-rrecex 11175 ax-cnre 11176 ax-pre-lttri 11177 ax-pre-lttrn 11178 ax-pre-ltadd 11179 ax-pre-mulgt0 11180 ax-pre-sup 11181 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2099 df-mo 2574 df-eu 2604 df-clab 2749 df-cleq 2762 df-clel 2845 df-nfc 2919 df-ne 2966 df-nel 3072 df-ral 3087 df-rex 3097 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3464 df-sbc 3753 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5560 df-eprel 5565 df-po 5573 df-so 5574 df-fr 5618 df-we 5620 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7866 df-2nd 7990 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8697 df-en 8947 df-dom 8948 df-sdom 8949 df-sup 9405 df-inf 9406 df-pnf 11248 df-mnf 11249 df-xr 11250 df-ltxr 11251 df-le 11252 df-sub 11446 df-neg 11447 df-div 11875 df-nn 12237 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-9 12313 df-n0 12508 df-z 12595 df-dec 12715 df-uz 12866 df-rp 13020 df-fl 13828 df-mod 13906 df-seq 14041 df-exp 14101 df-cj 15153 df-re 15154 df-im 15155 df-sqrt 15289 df-abs 15290 df-dvds 16314 df-gcd 16556 df-lcm 16651 |
| This theorem is referenced by: lcm8un 42737 |
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