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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 12318 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7430 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12341 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11173 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11234 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2791 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12321 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7429 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2791 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12322 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2791 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 1c1 11116 + caddc 11118 2c2 12310 4c4 12312 5c5 12313 6c6 12314 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2737 ax-1cn 11173 ax-addcl 11175 ax-addass 11180 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-iota 6496 df-fv 6548 df-ov 7422 df-2 12318 df-3 12319 df-4 12320 df-5 12321 df-6 12322 |
| This theorem is used by: 4p3e7 12409 div4p1lem1div2 12514 4t4e16 12831 6gcd4e2 16618 2exp16 17172 163prm 17207 631prm 17209 1259lem4 17216 2503lem2 17220 2503lem3 17221 4001lem1 17223 4001lem2 17224 4001lem4 17226 bposlem9 27507 hgt750lem2 35104 3exp7 42878 3lexlogpow5ineq1 42879 aks4d1p1p5 42900 235t711 43124 ex-decpmul 43125 3cubeslem3r 43476 lhe4.4ex1a 45097 ceil5half3 48141 fmtno4prmfac 48382 fmtno5faclem1 48389 gbowgt5 48585 mogoldbb 48608 |
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