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| Mirrors > Home > MPE Home > Th. List > 6p2e8 | Structured version Visualization version GIF version | ||
| Description: 6 + 2 = 8. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 6p2e8 | ⊢ (6 + 2) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12235 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7367 | . . . 4 ⊢ (6 + 2) = (6 + (1 + 1)) |
| 3 | 6cn 12263 | . . . . 5 ⊢ 6 ∈ ℂ | |
| 4 | ax-1cn 11087 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11146 | . . . 4 ⊢ ((6 + 1) + 1) = (6 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2765 | . . 3 ⊢ (6 + 2) = ((6 + 1) + 1) |
| 7 | df-7 12240 | . . . 4 ⊢ 7 = (6 + 1) | |
| 8 | 7 | oveq1i 7366 | . . 3 ⊢ (7 + 1) = ((6 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2765 | . 2 ⊢ (6 + 2) = (7 + 1) |
| 10 | df-8 12241 | . 2 ⊢ 8 = (7 + 1) | |
| 11 | 9, 10 | eqtr4i 2765 | 1 ⊢ (6 + 2) = 8 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 (class class class)co 7356 1c1 11030 + caddc 11032 2c2 12227 6c6 12231 7c7 12232 8c8 12233 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-1cn 11087 ax-addcl 11089 ax-addass 11094 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-iota 6441 df-fv 6493 df-ov 7359 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 |
| This theorem is referenced by: 6p3e9 12327 6t3e18 12740 83prm 17084 1259lem2 17093 1259lem5 17096 2503lem2 17099 2503lem3 17100 4001lem1 17102 log2ub 26931 hgt750lem2 34836 3exp7 42538 3cubeslem3l 43135 resqrtvalex 44089 imsqrtvalex 44090 lhe4.4ex1a 44773 sin5tlem5 47340 fmtno5faclem3 48059 |
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