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Mirrors > Home > MPE Home > Th. List > Mathboxes > readdsub | Structured version Visualization version GIF version |
Description: Law for addition and subtraction. (Contributed by Steven Nguyen, 28-Jan-2023.) |
Ref | Expression |
---|---|
readdsub | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐶) = ((𝐴 −ℝ 𝐶) + 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 1137 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐶 ∈ ℝ) | |
2 | readdcl 10954 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) | |
3 | 2 | 3adant3 1131 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) |
4 | repncan3 40366 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 + 𝐵) ∈ ℝ) → (𝐶 + ((𝐴 + 𝐵) −ℝ 𝐶)) = (𝐴 + 𝐵)) | |
5 | 1, 3, 4 | syl2anc 584 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 + ((𝐴 + 𝐵) −ℝ 𝐶)) = (𝐴 + 𝐵)) |
6 | repncan3 40366 | . . . . . 6 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐶 + (𝐴 −ℝ 𝐶)) = 𝐴) | |
7 | 6 | ancoms 459 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 + (𝐴 −ℝ 𝐶)) = 𝐴) |
8 | 7 | 3adant2 1130 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 + (𝐴 −ℝ 𝐶)) = 𝐴) |
9 | 8 | oveq1d 7290 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + (𝐴 −ℝ 𝐶)) + 𝐵) = (𝐴 + 𝐵)) |
10 | 1 | recnd 11003 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐶 ∈ ℂ) |
11 | rersubcl 40361 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 −ℝ 𝐶) ∈ ℝ) | |
12 | 11 | 3adant2 1130 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 −ℝ 𝐶) ∈ ℝ) |
13 | 12 | recnd 11003 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 −ℝ 𝐶) ∈ ℂ) |
14 | simp2 1136 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐵 ∈ ℝ) | |
15 | 14 | recnd 11003 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐵 ∈ ℂ) |
16 | 10, 13, 15 | addassd 10997 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + (𝐴 −ℝ 𝐶)) + 𝐵) = (𝐶 + ((𝐴 −ℝ 𝐶) + 𝐵))) |
17 | 5, 9, 16 | 3eqtr2d 2784 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 + ((𝐴 + 𝐵) −ℝ 𝐶)) = (𝐶 + ((𝐴 −ℝ 𝐶) + 𝐵))) |
18 | rersubcl 40361 | . . . 4 ⊢ (((𝐴 + 𝐵) ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐶) ∈ ℝ) | |
19 | 3, 1, 18 | syl2anc 584 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐶) ∈ ℝ) |
20 | 12, 14 | readdcld 11004 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 −ℝ 𝐶) + 𝐵) ∈ ℝ) |
21 | readdcan 11149 | . . 3 ⊢ ((((𝐴 + 𝐵) −ℝ 𝐶) ∈ ℝ ∧ ((𝐴 −ℝ 𝐶) + 𝐵) ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + ((𝐴 + 𝐵) −ℝ 𝐶)) = (𝐶 + ((𝐴 −ℝ 𝐶) + 𝐵)) ↔ ((𝐴 + 𝐵) −ℝ 𝐶) = ((𝐴 −ℝ 𝐶) + 𝐵))) | |
22 | 19, 20, 1, 21 | syl3anc 1370 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + ((𝐴 + 𝐵) −ℝ 𝐶)) = (𝐶 + ((𝐴 −ℝ 𝐶) + 𝐵)) ↔ ((𝐴 + 𝐵) −ℝ 𝐶) = ((𝐴 −ℝ 𝐶) + 𝐵))) |
23 | 17, 22 | mpbid 231 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐶) = ((𝐴 −ℝ 𝐶) + 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 (class class class)co 7275 ℝcr 10870 + caddc 10874 −ℝ cresub 40348 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-resscn 10928 ax-addrcl 10932 ax-addass 10936 ax-rnegex 10942 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-po 5503 df-so 5504 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-ltxr 11014 df-resub 40349 |
This theorem is referenced by: renpncan3 40374 resubidaddid1 40378 |
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