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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 12411 | . 2 ⊢ 8 = (7 + 1) | |
| 2 | 1 | eqcomi 2770 | 1 ⊢ (7 + 1) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7420 1c1 11201 + caddc 11203 7c7 12402 8c8 12403 |
| 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 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2753 df-8 12411 |
| This theorem is used by: 7t4e28 12930 9t9e81 12948 s8len 15054 prmlem2 17298 83prm 17301 163prm 17303 317prm 17304 631prm 17305 2503lem2 17316 2503lem3 17317 4001lem2 17320 4001lem3 17321 4001prm 17323 hgt750lem 35280 hgt750lem2 35281 lcmineqlem 43103 1p7e8 43315 3cubeslem3l 43697 3cubeslem3r 43698 resqrtvalex 44645 imsqrtvalex 44646 fmtno5lem4 48641 fmtno4nprmfac193 48659 m3prm 48677 m7prm 48685 nnsum3primesle9 48892 bgoldbtbndlem1 48903 |
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