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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 11859 | . . . 4 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7202 | . . 3 ⊢ (6 + 3) = (6 + (2 + 1)) |
3 | 6cn 11886 | . . . 4 ⊢ 6 ∈ ℂ | |
4 | 2cn 11870 | . . . 4 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 10752 | . . . 4 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | addassi 10808 | . . 3 ⊢ ((6 + 2) + 1) = (6 + (2 + 1)) |
7 | 2, 6 | eqtr4i 2762 | . 2 ⊢ (6 + 3) = ((6 + 2) + 1) |
8 | df-9 11865 | . . 3 ⊢ 9 = (8 + 1) | |
9 | 6p2e8 11954 | . . . 4 ⊢ (6 + 2) = 8 | |
10 | 9 | oveq1i 7201 | . . 3 ⊢ ((6 + 2) + 1) = (8 + 1) |
11 | 8, 10 | eqtr4i 2762 | . 2 ⊢ 9 = ((6 + 2) + 1) |
12 | 7, 11 | eqtr4i 2762 | 1 ⊢ (6 + 3) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1543 (class class class)co 7191 1c1 10695 + caddc 10697 2c2 11850 3c3 11851 6c6 11854 8c8 11856 9c9 11857 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 ax-1cn 10752 ax-addcl 10754 ax-addass 10759 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-rab 3060 df-v 3400 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-sn 4528 df-pr 4530 df-op 4534 df-uni 4806 df-br 5040 df-iota 6316 df-fv 6366 df-ov 7194 df-2 11858 df-3 11859 df-4 11860 df-5 11861 df-6 11862 df-7 11863 df-8 11864 df-9 11865 |
This theorem is referenced by: 3t3e9 11962 6p4e10 12330 2exp8 16605 139prm 16640 2503lem2 16654 4001lem1 16657 4001lem2 16658 4001lem4 16660 log2ublem3 25785 ex-gcd 28494 hgt750lem2 32298 kur14lem8 32842 problem5 33294 fmtno5lem1 44621 139prmALT 44664 gboge9 44832 gbpart9 44837 nnsum4primeseven 44868 |
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