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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 12281 | . . . 4 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 7407 | . . 3 ⊢ (5 + 3) = (5 + (2 + 1)) |
| 3 | 5cn 12306 | . . . 4 ⊢ 5 ∈ ℂ | |
| 4 | 2cn 12293 | . . . 4 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 11131 | . . . 4 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | addassi 11192 | . . 3 ⊢ ((5 + 2) + 1) = (5 + (2 + 1)) |
| 7 | 2, 6 | eqtr4i 2788 | . 2 ⊢ (5 + 3) = ((5 + 2) + 1) |
| 8 | df-8 12286 | . . 3 ⊢ 8 = (7 + 1) | |
| 9 | 5p2e7 12373 | . . . 4 ⊢ (5 + 2) = 7 | |
| 10 | 9 | oveq1i 7406 | . . 3 ⊢ ((5 + 2) + 1) = (7 + 1) |
| 11 | 8, 10 | eqtr4i 2788 | . 2 ⊢ 8 = ((5 + 2) + 1) |
| 12 | 7, 11 | eqtr4i 2788 | 1 ⊢ (5 + 3) = 8 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1560 (class class class)co 7396 1c1 11074 + caddc 11076 2c2 12272 3c3 12273 5c5 12275 7c7 12277 8c8 12278 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 ax-1cn 11131 ax-addcl 11133 ax-addass 11138 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-iota 6477 df-fv 6529 df-ov 7399 df-2 12280 df-3 12281 df-4 12282 df-5 12283 df-6 12284 df-7 12285 df-8 12286 |
| This theorem is referenced by: 5p4e9 12375 ef01bndlem 16216 2exp16 17126 1259lem2 17168 log2ublem3 27013 log2ub 27014 bposlem8 27355 lgsdir2lem1 27389 fib6 34703 235t711 42914 ex-decpmul 42915 8mod5e3 47960 fmtno5lem2 48163 fmtno5lem4 48165 257prm 48170 gbpart8 48390 8gbe 48395 evengpop3 48420 ackval3012 49314 |
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