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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 12313 | . 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 1570 (class class class)co 7410 1c1 11105 + caddc 11107 7c7 12304 8c8 12305 |
| This proof depends on 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-9 2153 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 401 df-ex 1810 df-cleq 2755 df-8 12313 |
| This theorem is used by: 7t4e28 12831 9t9e81 12849 s8len 14945 prmlem2 17184 83prm 17187 163prm 17189 317prm 17190 631prm 17191 2503lem2 17202 2503lem3 17203 4001lem2 17206 4001lem3 17207 4001prm 17209 hgt750lem 35047 hgt750lem2 35048 lcmineqlem 42847 3cubeslem3l 43445 3cubeslem3r 43446 resqrtvalex 44399 imsqrtvalex 44400 fmtno5lem4 48336 fmtno4nprmfac193 48354 m3prm 48372 m7prm 48380 nnsum3primesle9 48587 bgoldbtbndlem1 48598 |
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