| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 9t8e72 | Structured version Visualization version GIF version | ||
| Description: 9 times 8 equals 72. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9t8e72 | ⊢ (9 · 8) = ;72 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn0 12534 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 7nn0 12532 | . 2 ⊢ 7 ∈ ℕ0 | |
| 3 | df-8 12315 | . 2 ⊢ 8 = (7 + 1) | |
| 4 | 9t7e63 12849 | . 2 ⊢ (9 · 7) = ;63 | |
| 5 | 6nn0 12531 | . . 3 ⊢ 6 ∈ ℕ0 | |
| 6 | 3nn0 12528 | . . 3 ⊢ 3 ∈ ℕ0 | |
| 7 | eqid 2762 | . . 3 ⊢ ;63 = ;63 | |
| 8 | 6p1e7 12394 | . . 3 ⊢ (6 + 1) = 7 | |
| 9 | 2nn0 12527 | . . 3 ⊢ 2 ∈ ℕ0 | |
| 10 | 9cn 12347 | . . . 4 ⊢ 9 ∈ ℂ | |
| 11 | 3cn 12328 | . . . 4 ⊢ 3 ∈ ℂ | |
| 12 | 9p3e12 12810 | . . . 4 ⊢ (9 + 3) = ;12 | |
| 13 | 10, 11, 12 | addcomli 11408 | . . 3 ⊢ (3 + 9) = ;12 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 12783 | . 2 ⊢ (;63 + 9) = ;72 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 12819 | 1 ⊢ (9 · 8) = ;72 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7412 1c1 11107 · cmul 11111 2c2 12301 3c3 12302 6c6 12305 7c7 12306 8c8 12307 9c9 12308 ;cdc 12717 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-ltxr 11254 df-sub 11449 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 df-9 12316 df-n0 12511 df-dec 12718 |
| This theorem is used by: 9t9e81 12851 163prm 17191 2503prm 17206 quartlem1 27033 log2ublem3 27124 3lexlogpow5ineq1 42849 3lexlogpow5ineq5 42855 |
| Copyright terms: Public domain | W3C validator |