| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 3t3e9 | Structured version Visualization version GIF version | ||
| Description: 3 times 3 equals 9. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 3t3e9 | ⊢ (3 · 3) = 9 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-3 12299 | . . 3 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 7421 | . 2 ⊢ (3 · 3) = (3 · (2 + 1)) |
| 3 | 3cn 12317 | . . . . 5 ⊢ 3 ∈ ℂ | |
| 4 | 2cn 12311 | . . . . 5 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 11153 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | adddii 11216 | . . . 4 ⊢ (3 · (2 + 1)) = ((3 · 2) + (3 · 1)) |
| 7 | 3t2e6 12401 | . . . . 5 ⊢ (3 · 2) = 6 | |
| 8 | 3t1e3 12400 | . . . . 5 ⊢ (3 · 1) = 3 | |
| 9 | 7, 8 | oveq12i 7422 | . . . 4 ⊢ ((3 · 2) + (3 · 1)) = (6 + 3) |
| 10 | 6, 9 | eqtri 2786 | . . 3 ⊢ (3 · (2 + 1)) = (6 + 3) |
| 11 | 6p3e9 12395 | . . 3 ⊢ (6 + 3) = 9 | |
| 12 | 10, 11 | eqtri 2786 | . 2 ⊢ (3 · (2 + 1)) = 9 |
| 13 | 2, 12 | eqtri 2786 | 1 ⊢ (3 · 3) = 9 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 (class class class)co 7410 1c1 11096 + caddc 11098 · cmul 11100 2c2 12290 3c3 12291 6c6 12294 9c9 12297 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-mulcl 11157 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-1rid 11165 ax-cnre 11168 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-iota 6492 df-fv 6544 df-ov 7413 df-2 12298 df-3 12299 df-4 12300 df-5 12301 df-6 12302 df-7 12303 df-8 12304 df-9 12305 |
| This theorem is referenced by: sq3 14230 3dvds 16384 3dvdsdec 16385 3dvds2dec 16386 9nprm 17167 11prm 17170 43prm 17177 83prm 17178 317prm 17181 1259lem2 17187 1259lem4 17189 1259prm 17191 2503lem2 17193 mcubic 27012 log2tlbnd 27110 log2ublem3 27113 log2ub 27114 bposlem9 27456 lgsdir2lem5 27493 ex-lcm 30809 hgt750lem 35038 hgt750lem2 35039 3lexlogpow2ineq2 42846 3lexlogpow5ineq5 42847 3cubeslem3l 43437 3cubeslem3r 43438 inductionexd 44901 fmtno5lem3 48327 fmtno4prmfac193 48345 fmtno4nprmfac193 48346 127prm 48371 2exp340mod341 48518 9fppr8 48522 |
| Copyright terms: Public domain | W3C validator |