Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
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 10957 | . . . 4 ⊢ 3 = (2 + 1) | |
2 | 1 | oveq2i 6560 | . . 3 ⊢ (4 + 3) = (4 + (2 + 1)) |
3 | 4cn 10975 | . . . 4 ⊢ 4 ∈ ℂ | |
4 | 2cn 10968 | . . . 4 ⊢ 2 ∈ ℂ | |
5 | ax-1cn 9873 | . . . 4 ⊢ 1 ∈ ℂ | |
6 | 3, 4, 5 | addassi 9927 | . . 3 ⊢ ((4 + 2) + 1) = (4 + (2 + 1)) |
7 | 2, 6 | eqtr4i 2635 | . 2 ⊢ (4 + 3) = ((4 + 2) + 1) |
8 | df-7 10961 | . . 3 ⊢ 7 = (6 + 1) | |
9 | 4p2e6 11039 | . . . 4 ⊢ (4 + 2) = 6 | |
10 | 9 | oveq1i 6559 | . . 3 ⊢ ((4 + 2) + 1) = (6 + 1) |
11 | 8, 10 | eqtr4i 2635 | . 2 ⊢ 7 = ((4 + 2) + 1) |
12 | 7, 11 | eqtr4i 2635 | 1 ⊢ (4 + 3) = 7 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 (class class class)co 6549 1c1 9816 + caddc 9818 2c2 10947 3c3 10948 4c4 10949 6c6 10951 7c7 10952 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-addass 9880 ax-i2m1 9883 ax-1ne0 9884 ax-rrecex 9887 ax-cnre 9888 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-iota 5768 df-fv 5812 df-ov 6552 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 |
This theorem is referenced by: 4p4e8 11041 37prm 15666 317prm 15671 1259lem5 15680 2503lem2 15683 4001lem1 15686 4001lem2 15687 log2ub 24476 bposlem8 24816 2lgslem3d 24924 2lgsoddprmlem3d 24938 fmtno5lem4 40006 257prm 40011 127prm 40053 gbpart7 40189 bgoldbwt 40199 bgoldbst 40200 |
Copyright terms: Public domain | W3C validator |