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| Mirrors > Home > ILE Home > Th. List > 3p3e6 | GIF version | ||
| Description: 3 + 3 = 6. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 3p3e6 | ⊢ (3 + 3) = 6 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-3 9202 | . . . 4 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 6028 | . . 3 ⊢ (3 + 3) = (3 + (2 + 1)) |
| 3 | 3cn 9217 | . . . 4 ⊢ 3 ∈ ℂ | |
| 4 | 2cn 9213 | . . . 4 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 8124 | . . . 4 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | addassi 8186 | . . 3 ⊢ ((3 + 2) + 1) = (3 + (2 + 1)) |
| 7 | 2, 6 | eqtr4i 2255 | . 2 ⊢ (3 + 3) = ((3 + 2) + 1) |
| 8 | df-6 9205 | . . 3 ⊢ 6 = (5 + 1) | |
| 9 | 3p2e5 9284 | . . . 4 ⊢ (3 + 2) = 5 | |
| 10 | 9 | oveq1i 6027 | . . 3 ⊢ ((3 + 2) + 1) = (5 + 1) |
| 11 | 8, 10 | eqtr4i 2255 | . 2 ⊢ 6 = ((3 + 2) + 1) |
| 12 | 7, 11 | eqtr4i 2255 | 1 ⊢ (3 + 3) = 6 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1397 (class class class)co 6017 1c1 8032 + caddc 8034 2c2 9193 3c3 9194 5c5 9196 6c6 9197 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-addrcl 8128 ax-addass 8133 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6020 df-2 9201 df-3 9202 df-4 9203 df-5 9204 df-6 9205 |
| This theorem is referenced by: 3t2e6 9299 binom4 15702 ex-dvds 16326 ex-gcd 16327 |
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