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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 12298 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7421 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12321 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11153 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11214 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2789 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12301 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7420 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2789 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12302 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2789 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 (class class class)co 7410 1c1 11096 + caddc 11098 2c2 12290 4c4 12292 5c5 12293 6c6 12294 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-1cn 11153 ax-addcl 11155 ax-addass 11160 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-iota 6492 df-fv 6544 df-ov 7413 df-2 12298 df-3 12299 df-4 12300 df-5 12301 df-6 12302 |
| This theorem is referenced by: 4p3e7 12389 div4p1lem1div2 12494 4t4e16 12810 6gcd4e2 16591 2exp16 17145 163prm 17180 631prm 17182 1259lem4 17189 2503lem2 17193 2503lem3 17194 4001lem1 17196 4001lem2 17197 4001lem4 17199 bposlem9 27456 hgt750lem2 35039 3exp7 42820 3lexlogpow5ineq1 42821 aks4d1p1p5 42842 235t711 43066 ex-decpmul 43067 3cubeslem3r 43418 lhe4.4ex1a 45039 ceil5half3 48083 fmtno4prmfac 48324 fmtno5faclem1 48331 gbowgt5 48527 mogoldbb 48550 |
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