![]() |
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 11689 | . . 3 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7146 | . 2 ⊢ (3 · 3) = (3 · (2 + 1)) |
3 | 3cn 11706 | . . . . 5 ⊢ 3 ∈ ℂ | |
4 | 2cn 11700 | . . . . 5 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 10584 | . . . . 5 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | adddii 10642 | . . . 4 ⊢ (3 · (2 + 1)) = ((3 · 2) + (3 · 1)) |
7 | 3t2e6 11791 | . . . . 5 ⊢ (3 · 2) = 6 | |
8 | 3t1e3 11790 | . . . . 5 ⊢ (3 · 1) = 3 | |
9 | 7, 8 | oveq12i 7147 | . . . 4 ⊢ ((3 · 2) + (3 · 1)) = (6 + 3) |
10 | 6, 9 | eqtri 2821 | . . 3 ⊢ (3 · (2 + 1)) = (6 + 3) |
11 | 6p3e9 11785 | . . 3 ⊢ (6 + 3) = 9 | |
12 | 10, 11 | eqtri 2821 | . 2 ⊢ (3 · (2 + 1)) = 9 |
13 | 2, 12 | eqtri 2821 | 1 ⊢ (3 · 3) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 (class class class)co 7135 1c1 10527 + caddc 10529 · cmul 10531 2c2 11680 3c3 11681 6c6 11684 9c9 11687 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-mulcl 10588 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-1rid 10596 ax-cnre 10599 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-ral 3111 df-rex 3112 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-iota 6283 df-fv 6332 df-ov 7138 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 |
This theorem is referenced by: sq3 13557 3dvds 15672 3dvdsdec 15673 3dvds2dec 15674 9nprm 16438 11prm 16440 43prm 16447 83prm 16448 317prm 16451 1259lem2 16457 1259lem4 16459 1259prm 16461 2503lem2 16463 mcubic 25433 log2tlbnd 25531 log2ublem3 25534 log2ub 25535 bposlem9 25876 lgsdir2lem5 25913 ex-lcm 28243 hgt750lem 32032 hgt750lem2 32033 3lexlogpow5ineq2 39342 3cubeslem3l 39627 3cubeslem3r 39628 inductionexd 40858 fmtno5lem3 44072 fmtno4prmfac193 44090 fmtno4nprmfac193 44091 127prm 44116 2exp340mod341 44251 9fppr8 44255 |
Copyright terms: Public domain | W3C validator |