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| Mirrors > Home > MPE Home > Th. List > 7p1e8 | Structured version Visualization version GIF version | ||
| Description: 7 + 1 = 8. (Contributed by Mario Carneiro, 18-Apr-2015.) |
| Ref | Expression |
|---|---|
| 7p1e8 | ⊢ (7 + 1) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-8 12424 | . 2 ⊢ 8 = (7 + 1) | |
| 2 | 1 | eqcomi 2772 | 1 ⊢ (7 + 1) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7430 1c1 11214 + caddc 11216 7c7 12415 8c8 12416 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-9 2156 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1812 df-cleq 2755 df-8 12424 |
| This theorem is used by: 7t4e28 12943 9t9e81 12961 s8len 15069 prmlem2 17313 83prm 17316 163prm 17318 317prm 17319 631prm 17320 2503lem2 17331 2503lem3 17332 4001lem2 17335 4001lem3 17336 4001prm 17338 hgt750lem 35336 hgt750lem2 35337 lcmineqlem 43248 1p7e8 43460 3cubeslem3l 43842 3cubeslem3r 43843 resqrtvalex 44791 imsqrtvalex 44792 fmtno5lem4 48786 fmtno4nprmfac193 48804 m3prm 48822 m7prm 48830 nnsum3primesle9 49037 bgoldbtbndlem1 49048 |
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