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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 12302 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7422 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12325 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11157 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11218 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2795 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12305 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7421 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2795 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12306 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2795 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1567 (class class class)co 7411 1c1 11100 + caddc 11102 2c2 12294 4c4 12296 5c5 12297 6c6 12298 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-1cn 11157 ax-addcl 11159 ax-addass 11164 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-iota 6493 df-fv 6545 df-ov 7414 df-2 12302 df-3 12303 df-4 12304 df-5 12305 df-6 12306 |
| This theorem is referenced by: 4p3e7 12393 div4p1lem1div2 12498 4t4e16 12814 6gcd4e2 16595 2exp16 17149 163prm 17184 631prm 17186 1259lem4 17193 2503lem2 17197 2503lem3 17198 4001lem1 17200 4001lem2 17201 4001lem4 17203 bposlem9 27421 hgt750lem2 34983 3exp7 42709 3lexlogpow5ineq1 42710 aks4d1p1p5 42731 235t711 42955 ex-decpmul 42956 3cubeslem3r 43309 lhe4.4ex1a 44930 ceil5half3 47971 fmtno4prmfac 48212 fmtno5faclem1 48219 gbowgt5 48415 mogoldbb 48438 |
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