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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 12298 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7421 | . . . 4 ⊢ (6 + 2) = (6 + (1 + 1)) |
| 3 | 6cn 12327 | . . . . 5 ⊢ 6 ∈ ℂ | |
| 4 | ax-1cn 11153 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11214 | . . . 4 ⊢ ((6 + 1) + 1) = (6 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2789 | . . 3 ⊢ (6 + 2) = ((6 + 1) + 1) |
| 7 | df-7 12303 | . . . 4 ⊢ 7 = (6 + 1) | |
| 8 | 7 | oveq1i 7420 | . . 3 ⊢ (7 + 1) = ((6 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2789 | . 2 ⊢ (6 + 2) = (7 + 1) |
| 10 | df-8 12304 | . 2 ⊢ 8 = (7 + 1) | |
| 11 | 9, 10 | eqtr4i 2789 | 1 ⊢ (6 + 2) = 8 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 (class class class)co 7410 1c1 11096 + caddc 11098 2c2 12290 6c6 12294 7c7 12295 8c8 12296 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-1cn 11153 ax-addcl 11155 ax-addass 11160 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-iota 6492 df-fv 6544 df-ov 7413 df-2 12298 df-3 12299 df-4 12300 df-5 12301 df-6 12302 df-7 12303 df-8 12304 |
| This theorem is referenced by: 6p3e9 12395 6t3e18 12816 83prm 17178 1259lem2 17187 1259lem5 17190 2503lem2 17193 2503lem3 17194 4001lem1 17196 log2ub 27114 hgt750lem2 35039 3exp7 42840 3cubeslem3l 43437 resqrtvalex 44391 imsqrtvalex 44392 lhe4.4ex1a 45059 sin5tlem5 47634 fmtno5faclem3 48353 |
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