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| Mirrors > Home > MPE Home > Th. List > 5p3e8 | Structured version Visualization version GIF version | ||
| Description: 5 + 3 = 8. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 5p3e8 | ⊢ (5 + 3) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-3 12239 | . . . 4 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 7372 | . . 3 ⊢ (5 + 3) = (5 + (2 + 1)) |
| 3 | 5cn 12263 | . . . 4 ⊢ 5 ∈ ℂ | |
| 4 | 2cn 12250 | . . . 4 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 11090 | . . . 4 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | addassi 11149 | . . 3 ⊢ ((5 + 2) + 1) = (5 + (2 + 1)) |
| 7 | 2, 6 | eqtr4i 2763 | . 2 ⊢ (5 + 3) = ((5 + 2) + 1) |
| 8 | df-8 12244 | . . 3 ⊢ 8 = (7 + 1) | |
| 9 | 5p2e7 12326 | . . . 4 ⊢ (5 + 2) = 7 | |
| 10 | 9 | oveq1i 7371 | . . 3 ⊢ ((5 + 2) + 1) = (7 + 1) |
| 11 | 8, 10 | eqtr4i 2763 | . 2 ⊢ 8 = ((5 + 2) + 1) |
| 12 | 7, 11 | eqtr4i 2763 | 1 ⊢ (5 + 3) = 8 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7361 1c1 11033 + caddc 11035 2c2 12230 3c3 12231 5c5 12233 7c7 12235 8c8 12236 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-1cn 11090 ax-addcl 11092 ax-addass 11097 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6449 df-fv 6501 df-ov 7364 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 df-7 12243 df-8 12244 |
| This theorem is referenced by: 5p4e9 12328 ef01bndlem 16145 2exp16 17055 1259lem2 17096 log2ublem3 26928 log2ub 26929 bposlem8 27271 lgsdir2lem1 27305 fib6 34569 235t711 42754 ex-decpmul 42755 8mod5e3 47829 fmtno5lem2 48032 fmtno5lem4 48034 257prm 48039 gbpart8 48259 8gbe 48264 evengpop3 48289 ackval3012 49183 |
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