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Mirrors > Home > MPE Home > Th. List > 6p3e9 | Structured version Visualization version GIF version |
Description: 6 + 3 = 9. (Contributed by NM, 11-May-2004.) |
Ref | Expression |
---|---|
6p3e9 | ⊢ (6 + 3) = 9 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3 11700 | . . . 4 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7166 | . . 3 ⊢ (6 + 3) = (6 + (2 + 1)) |
3 | 6cn 11727 | . . . 4 ⊢ 6 ∈ ℂ | |
4 | 2cn 11711 | . . . 4 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 10594 | . . . 4 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | addassi 10650 | . . 3 ⊢ ((6 + 2) + 1) = (6 + (2 + 1)) |
7 | 2, 6 | eqtr4i 2847 | . 2 ⊢ (6 + 3) = ((6 + 2) + 1) |
8 | df-9 11706 | . . 3 ⊢ 9 = (8 + 1) | |
9 | 6p2e8 11795 | . . . 4 ⊢ (6 + 2) = 8 | |
10 | 9 | oveq1i 7165 | . . 3 ⊢ ((6 + 2) + 1) = (8 + 1) |
11 | 8, 10 | eqtr4i 2847 | . 2 ⊢ 9 = ((6 + 2) + 1) |
12 | 7, 11 | eqtr4i 2847 | 1 ⊢ (6 + 3) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 (class class class)co 7155 1c1 10537 + caddc 10539 2c2 11691 3c3 11692 6c6 11695 8c8 11697 9c9 11698 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-1cn 10594 ax-addcl 10596 ax-addass 10601 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-rab 3147 df-v 3496 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-br 5066 df-iota 6313 df-fv 6362 df-ov 7158 df-2 11699 df-3 11700 df-4 11701 df-5 11702 df-6 11703 df-7 11704 df-8 11705 df-9 11706 |
This theorem is referenced by: 3t3e9 11803 6p4e10 12169 2exp8 16422 139prm 16456 2503lem2 16470 4001lem1 16473 4001lem2 16474 4001lem4 16476 log2ublem3 25525 ex-gcd 28235 hgt750lem2 31923 kur14lem8 32460 problem5 32912 fmtno5lem1 43714 139prmALT 43758 gboge9 43928 gbpart9 43933 nnsum4primeseven 43964 |
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