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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 11700 | . . 3 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7166 | . 2 ⊢ (3 · 3) = (3 · (2 + 1)) |
3 | 3cn 11717 | . . . . 5 ⊢ 3 ∈ ℂ | |
4 | 2cn 11711 | . . . . 5 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 10594 | . . . . 5 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | adddii 10652 | . . . 4 ⊢ (3 · (2 + 1)) = ((3 · 2) + (3 · 1)) |
7 | 3t2e6 11802 | . . . . 5 ⊢ (3 · 2) = 6 | |
8 | 3t1e3 11801 | . . . . 5 ⊢ (3 · 1) = 3 | |
9 | 7, 8 | oveq12i 7167 | . . . 4 ⊢ ((3 · 2) + (3 · 1)) = (6 + 3) |
10 | 6, 9 | eqtri 2844 | . . 3 ⊢ (3 · (2 + 1)) = (6 + 3) |
11 | 6p3e9 11796 | . . 3 ⊢ (6 + 3) = 9 | |
12 | 10, 11 | eqtri 2844 | . 2 ⊢ (3 · (2 + 1)) = 9 |
13 | 2, 12 | eqtri 2844 | 1 ⊢ (3 · 3) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 (class class class)co 7155 1c1 10537 + caddc 10539 · cmul 10541 2c2 11691 3c3 11692 6c6 11695 9c9 11698 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-resscn 10593 ax-1cn 10594 ax-icn 10595 ax-addcl 10596 ax-mulcl 10598 ax-mulcom 10600 ax-addass 10601 ax-mulass 10602 ax-distr 10603 ax-1rid 10606 ax-cnre 10609 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-br 5066 df-iota 6313 df-fv 6362 df-ov 7158 df-2 11699 df-3 11700 df-4 11701 df-5 11702 df-6 11703 df-7 11704 df-8 11705 df-9 11706 |
This theorem is referenced by: sq3 13560 3dvds 15679 3dvdsdec 15680 3dvds2dec 15681 9nprm 16445 11prm 16447 43prm 16454 83prm 16455 317prm 16458 1259lem2 16464 1259lem4 16466 1259prm 16468 2503lem2 16470 mcubic 25424 log2tlbnd 25522 log2ublem3 25525 log2ub 25526 bposlem9 25867 lgsdir2lem5 25904 ex-lcm 28236 hgt750lem 31922 hgt750lem2 31923 3cubeslem3l 39281 3cubeslem3r 39282 inductionexd 40503 fmtno5lem3 43716 fmtno4prmfac193 43734 fmtno4nprmfac193 43735 127prm 43762 2exp340mod341 43897 9fppr8 43901 |
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