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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 12192 | . . . 4 ⊢ 3 = (2 + 1) | |
| 2 | 1 | oveq2i 7360 | . . 3 ⊢ (5 + 3) = (5 + (2 + 1)) |
| 3 | 5cn 12216 | . . . 4 ⊢ 5 ∈ ℂ | |
| 4 | 2cn 12203 | . . . 4 ⊢ 2 ∈ ℂ | |
| 5 | ax-1cn 11067 | . . . 4 ⊢ 1 ∈ ℂ | |
| 6 | 3, 4, 5 | addassi 11125 | . . 3 ⊢ ((5 + 2) + 1) = (5 + (2 + 1)) |
| 7 | 2, 6 | eqtr4i 2755 | . 2 ⊢ (5 + 3) = ((5 + 2) + 1) |
| 8 | df-8 12197 | . . 3 ⊢ 8 = (7 + 1) | |
| 9 | 5p2e7 12279 | . . . 4 ⊢ (5 + 2) = 7 | |
| 10 | 9 | oveq1i 7359 | . . 3 ⊢ ((5 + 2) + 1) = (7 + 1) |
| 11 | 8, 10 | eqtr4i 2755 | . 2 ⊢ 8 = ((5 + 2) + 1) |
| 12 | 7, 11 | eqtr4i 2755 | 1 ⊢ (5 + 3) = 8 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 (class class class)co 7349 1c1 11010 + caddc 11012 2c2 12183 3c3 12184 5c5 12186 7c7 12188 8c8 12189 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2701 ax-1cn 11067 ax-addcl 11069 ax-addass 11074 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-rab 3395 df-v 3438 df-dif 3906 df-un 3908 df-ss 3920 df-nul 4285 df-if 4477 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-br 5093 df-iota 6438 df-fv 6490 df-ov 7352 df-2 12191 df-3 12192 df-4 12193 df-5 12194 df-6 12195 df-7 12196 df-8 12197 |
| This theorem is referenced by: 5p4e9 12281 ef01bndlem 16093 2exp16 17002 1259lem2 17043 log2ublem3 26856 log2ub 26857 bposlem8 27200 lgsdir2lem1 27234 fib6 34374 235t711 42282 ex-decpmul 42283 8mod5e3 47348 fmtno5lem2 47542 fmtno5lem4 47544 257prm 47549 gbpart8 47756 8gbe 47761 evengpop3 47786 ackval3012 48681 |
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