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| Mirrors > Home > MPE Home > Th. List > 4p2e6 | Structured version Visualization version GIF version | ||
| Description: 4 + 2 = 6. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 4p2e6 | ⊢ (4 + 2) = 6 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12225 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7380 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12247 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11102 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11160 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2755 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12228 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7379 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2755 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12229 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2755 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 (class class class)co 7369 1c1 11045 + caddc 11047 2c2 12217 4c4 12219 5c5 12220 6c6 12221 |
| 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 11102 ax-addcl 11104 ax-addass 11109 |
| 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 3403 df-v 3446 df-dif 3914 df-un 3916 df-ss 3928 df-nul 4293 df-if 4485 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-iota 6452 df-fv 6507 df-ov 7372 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 |
| This theorem is referenced by: 4p3e7 12311 div4p1lem1div2 12413 4t4e16 12724 6gcd4e2 16484 2exp16 17037 163prm 17071 631prm 17073 1259lem4 17080 2503lem2 17084 2503lem3 17085 4001lem1 17087 4001lem2 17088 4001lem4 17090 bposlem9 27236 hgt750lem2 34636 3exp7 42034 3lexlogpow5ineq1 42035 aks4d1p1p5 42056 235t711 42286 ex-decpmul 42287 3cubeslem3r 42668 lhe4.4ex1a 44311 ceil5half3 47334 fmtno4prmfac 47566 fmtno5faclem1 47573 gbowgt5 47756 mogoldbb 47779 |
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