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| Mirrors > Home > MPE Home > Th. List > 5p2e7 | Structured version Visualization version GIF version | ||
| Description: 5 + 2 = 7. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 5p2e7 | ⊢ (5 + 2) = 7 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12320 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7430 | . . . 4 ⊢ (5 + 2) = (5 + (1 + 1)) |
| 3 | 5cn 12346 | . . . . 5 ⊢ 5 ∈ ℂ | |
| 4 | ax-1cn 11175 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11236 | . . . 4 ⊢ ((5 + 1) + 1) = (5 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2791 | . . 3 ⊢ (5 + 2) = ((5 + 1) + 1) |
| 7 | df-6 12324 | . . . 4 ⊢ 6 = (5 + 1) | |
| 8 | 7 | oveq1i 7429 | . . 3 ⊢ (6 + 1) = ((5 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2791 | . 2 ⊢ (5 + 2) = (6 + 1) |
| 10 | df-7 12325 | . 2 ⊢ 7 = (6 + 1) | |
| 11 | 9, 10 | eqtr4i 2791 | 1 ⊢ (5 + 2) = 7 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 1c1 11118 + caddc 11120 2c2 12312 5c5 12315 6c6 12316 7c7 12317 |
| 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-8 2148 ax-9 2156 ax-ext 2737 ax-1cn 11175 ax-addcl 11177 ax-addass 11182 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-iota 6496 df-fv 6548 df-ov 7422 df-2 12320 df-3 12321 df-4 12322 df-5 12323 df-6 12324 df-7 12325 |
| This theorem is used by: 5p3e8 12414 17prm 17201 prmlem2 17204 37prm 17205 317prm 17210 1259lem1 17215 1259lem2 17216 1259lem4 17218 2503lem2 17222 4001lem1 17225 4001lem4 17228 log2ub 27167 bposlem8 27508 aks4d1p1p4 42898 aks4d1p1p7 42901 ex-decpmul 43127 resqrtvalex 44431 imsqrtvalex 44432 fmtno5lem2 48366 257prm 48373 127prm 48411 |
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