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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 12250 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7400 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12272 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11132 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11190 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2756 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12253 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7399 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2756 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12254 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2756 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 (class class class)co 7389 1c1 11075 + caddc 11077 2c2 12242 4c4 12244 5c5 12245 6c6 12246 |
| 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 2702 ax-1cn 11132 ax-addcl 11134 ax-addass 11139 |
| 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 2709 df-cleq 2722 df-clel 2804 df-rab 3409 df-v 3452 df-dif 3919 df-un 3921 df-ss 3933 df-nul 4299 df-if 4491 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5110 df-iota 6466 df-fv 6521 df-ov 7392 df-2 12250 df-3 12251 df-4 12252 df-5 12253 df-6 12254 |
| This theorem is referenced by: 4p3e7 12341 div4p1lem1div2 12443 4t4e16 12754 6gcd4e2 16514 2exp16 17067 163prm 17101 631prm 17103 1259lem4 17110 2503lem2 17114 2503lem3 17115 4001lem1 17117 4001lem2 17118 4001lem4 17120 bposlem9 27209 hgt750lem2 34649 3exp7 42036 3lexlogpow5ineq1 42037 aks4d1p1p5 42058 235t711 42288 ex-decpmul 42289 3cubeslem3r 42668 lhe4.4ex1a 44311 ceil5half3 47331 fmtno4prmfac 47563 fmtno5faclem1 47570 gbowgt5 47753 mogoldbb 47776 |
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