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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 12328 | . 2 ⊢ 8 = (7 + 1) | |
| 2 | 1 | eqcomi 2774 | 1 ⊢ (7 + 1) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 1c1 11120 + caddc 11122 7c7 12319 8c8 12320 |
| 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-9 2156 ax-ext 2737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2757 df-8 12328 |
| This theorem is used by: 7t4e28 12847 9t9e81 12865 s8len 14968 prmlem2 17206 83prm 17209 163prm 17211 317prm 17212 631prm 17213 2503lem2 17224 2503lem3 17225 4001lem2 17228 4001lem3 17229 4001prm 17231 hgt750lem 35107 hgt750lem2 35108 lcmineqlem 42881 1p7e8 43093 3cubeslem3l 43494 3cubeslem3r 43495 resqrtvalex 44448 imsqrtvalex 44449 fmtno5lem4 48385 fmtno4nprmfac193 48403 m3prm 48421 m7prm 48429 nnsum3primesle9 48636 bgoldbtbndlem1 48647 |
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