| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 12275 | . . . 4 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 7402 | . . 3 ⊢ (6 + 3) = (6 + (2 + 1)) |
| 3 | 6cn 12303 | . . . 4 ⊢ 6 ∈ ℂ | |
| 4 | 2cn 12287 | . . . 4 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 11125 | . . . 4 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | addassi 11186 | . . 3 ⊢ ((6 + 2) + 1) = (6 + (2 + 1)) |
| 7 | 2, 6 | eqtr4i 2787 | . 2 ⊢ (6 + 3) = ((6 + 2) + 1) |
| 8 | df-9 12281 | . . 3 ⊢ 9 = (8 + 1) | |
| 9 | 6p2e8 12370 | . . . 4 ⊢ (6 + 2) = 8 | |
| 10 | 9 | oveq1i 7401 | . . 3 ⊢ ((6 + 2) + 1) = (8 + 1) |
| 11 | 8, 10 | eqtr4i 2787 | . 2 ⊢ 9 = ((6 + 2) + 1) |
| 12 | 7, 11 | eqtr4i 2787 | 1 ⊢ (6 + 3) = 9 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 (class class class)co 7391 1c1 11068 + caddc 11070 2c2 12266 3c3 12267 6c6 12270 8c8 12272 9c9 12273 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-1cn 11125 ax-addcl 11127 ax-addass 11132 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-iota 6472 df-fv 6524 df-ov 7394 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 |
| This theorem is referenced by: 3t3e9 12379 6p4e10 12759 2exp8 17115 139prm 17151 2503lem2 17165 4001lem1 17168 4001lem2 17169 4001lem4 17171 log2ublem3 27001 ex-gcd 30616 hgt750lem2 34907 kur14lem8 35524 problem5 35980 fmtno5lem1 48123 139prmALT 48166 gboge9 48347 gbpart9 48352 nnsum4primeseven 48383 |
| Copyright terms: Public domain | W3C validator |