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Mirrors > Home > MPE Home > Th. List > 4p3e7 | Structured version Visualization version GIF version |
Description: 4 + 3 = 7. (Contributed by NM, 11-May-2004.) |
Ref | Expression |
---|---|
4p3e7 | ⊢ (4 + 3) = 7 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3 11704 | . . . 4 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 7169 | . . 3 ⊢ (4 + 3) = (4 + (2 + 1)) |
3 | 4cn 11725 | . . . 4 ⊢ 4 ∈ ℂ | |
4 | 2cn 11715 | . . . 4 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 10597 | . . . 4 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | addassi 10653 | . . 3 ⊢ ((4 + 2) + 1) = (4 + (2 + 1)) |
7 | 2, 6 | eqtr4i 2849 | . 2 ⊢ (4 + 3) = ((4 + 2) + 1) |
8 | df-7 11708 | . . 3 ⊢ 7 = (6 + 1) | |
9 | 4p2e6 11793 | . . . 4 ⊢ (4 + 2) = 6 | |
10 | 9 | oveq1i 7168 | . . 3 ⊢ ((4 + 2) + 1) = (6 + 1) |
11 | 8, 10 | eqtr4i 2849 | . 2 ⊢ 7 = ((4 + 2) + 1) |
12 | 7, 11 | eqtr4i 2849 | 1 ⊢ (4 + 3) = 7 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 (class class class)co 7158 1c1 10540 + caddc 10542 2c2 11695 3c3 11696 4c4 11697 6c6 11699 7c7 11700 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-1cn 10597 ax-addcl 10599 ax-addass 10604 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-iota 6316 df-fv 6365 df-ov 7161 df-2 11703 df-3 11704 df-4 11705 df-5 11706 df-6 11707 df-7 11708 |
This theorem is referenced by: 4p4e8 11795 37prm 16456 317prm 16461 1259lem5 16470 2503lem2 16473 4001lem1 16476 4001lem2 16477 log2ub 25529 bposlem8 25869 2lgslem3d 25977 2lgsoddprmlem3d 25991 hgt750lem 31924 hgt750lem2 31925 fmtno5lem4 43725 257prm 43730 127prm 43770 gbpart7 43939 sbgoldbwt 43949 sbgoldbst 43950 |
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