Mathbox for Filip Cernatescu |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > problem3 | Structured version Visualization version GIF version |
Description: Practice problem 3. Clues: eqcomi 2749 eqtri 2768 subaddrii 11310 recni 10990 4re 12057 3re 12053 1re 10976 df-4 12038 addcomi 11166. (Contributed by Filip Cernatescu, 16-Mar-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
problem3.1 | ⊢ 𝐴 ∈ ℂ |
problem3.2 | ⊢ (𝐴 + 3) = 4 |
Ref | Expression |
---|---|
problem3 | ⊢ 𝐴 = 1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 4re 12057 | . . . . . 6 ⊢ 4 ∈ ℝ | |
2 | 1 | recni 10990 | . . . . 5 ⊢ 4 ∈ ℂ |
3 | 3re 12053 | . . . . . 6 ⊢ 3 ∈ ℝ | |
4 | 3 | recni 10990 | . . . . 5 ⊢ 3 ∈ ℂ |
5 | 1re 10976 | . . . . . 6 ⊢ 1 ∈ ℝ | |
6 | 5 | recni 10990 | . . . . 5 ⊢ 1 ∈ ℂ |
7 | df-4 12038 | . . . . . 6 ⊢ 4 = (3 + 1) | |
8 | 7 | eqcomi 2749 | . . . . 5 ⊢ (3 + 1) = 4 |
9 | 2, 4, 6, 8 | subaddrii 11310 | . . . 4 ⊢ (4 − 3) = 1 |
10 | 9 | eqcomi 2749 | . . 3 ⊢ 1 = (4 − 3) |
11 | problem3.1 | . . . 4 ⊢ 𝐴 ∈ ℂ | |
12 | 4, 11 | addcomi 11166 | . . . . 5 ⊢ (3 + 𝐴) = (𝐴 + 3) |
13 | problem3.2 | . . . . 5 ⊢ (𝐴 + 3) = 4 | |
14 | 12, 13 | eqtri 2768 | . . . 4 ⊢ (3 + 𝐴) = 4 |
15 | 2, 4, 11, 14 | subaddrii 11310 | . . 3 ⊢ (4 − 3) = 𝐴 |
16 | 10, 15 | eqtri 2768 | . 2 ⊢ 1 = 𝐴 |
17 | 16 | eqcomi 2749 | 1 ⊢ 𝐴 = 1 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1542 ∈ wcel 2110 (class class class)co 7271 ℂcc 10870 1c1 10873 + caddc 10875 − cmin 11205 3c3 12029 4c4 12030 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-br 5080 df-opab 5142 df-mpt 5163 df-id 5490 df-po 5504 df-so 5505 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-ltxr 11015 df-sub 11207 df-2 12036 df-3 12037 df-4 12038 |
This theorem is referenced by: (None) |
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