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Mirrors > Home > MPE Home > Th. List > 6p3e9 | Structured version Visualization version GIF version |
Description: 6 + 3 = 9. (Contributed by NM, 11-May-2004.) |
Ref | Expression |
---|---|
6p3e9 | ⊢ (6 + 3) = 9 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3 12357 | . . . 4 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7459 | . . 3 ⊢ (6 + 3) = (6 + (2 + 1)) |
3 | 6cn 12384 | . . . 4 ⊢ 6 ∈ ℂ | |
4 | 2cn 12368 | . . . 4 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 11242 | . . . 4 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | addassi 11300 | . . 3 ⊢ ((6 + 2) + 1) = (6 + (2 + 1)) |
7 | 2, 6 | eqtr4i 2771 | . 2 ⊢ (6 + 3) = ((6 + 2) + 1) |
8 | df-9 12363 | . . 3 ⊢ 9 = (8 + 1) | |
9 | 6p2e8 12452 | . . . 4 ⊢ (6 + 2) = 8 | |
10 | 9 | oveq1i 7458 | . . 3 ⊢ ((6 + 2) + 1) = (8 + 1) |
11 | 8, 10 | eqtr4i 2771 | . 2 ⊢ 9 = ((6 + 2) + 1) |
12 | 7, 11 | eqtr4i 2771 | 1 ⊢ (6 + 3) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 (class class class)co 7448 1c1 11185 + caddc 11187 2c2 12348 3c3 12349 6c6 12352 8c8 12354 9c9 12355 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2711 ax-1cn 11242 ax-addcl 11244 ax-addass 11249 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-ss 3993 df-nul 4353 df-if 4549 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-iota 6525 df-fv 6581 df-ov 7451 df-2 12356 df-3 12357 df-4 12358 df-5 12359 df-6 12360 df-7 12361 df-8 12362 df-9 12363 |
This theorem is referenced by: 3t3e9 12460 6p4e10 12830 2exp8 17136 139prm 17171 2503lem2 17185 4001lem1 17188 4001lem2 17189 4001lem4 17191 log2ublem3 27009 ex-gcd 30489 hgt750lem2 34629 kur14lem8 35181 problem5 35637 fmtno5lem1 47427 139prmALT 47470 gboge9 47638 gbpart9 47643 nnsum4primeseven 47674 |
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