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| Mirrors > Home > MPE Home > Th. List > Mathboxes > redivdird | Structured version Visualization version GIF version | ||
| Description: Distribution of division over addition. (Contributed by SN, 9-Apr-2026.) |
| Ref | Expression |
|---|---|
| rediv23d.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| rediv23d.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| rediv23d.c | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
| rediv23d.z | ⊢ (𝜑 → 𝐶 ≠ 0) |
| Ref | Expression |
|---|---|
| redivdird | ⊢ (𝜑 → ((𝐴 + 𝐵) /ℝ 𝐶) = ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rediv23d.c | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
| 2 | 1 | recnd 11162 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| 3 | rediv23d.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | rediv23d.z | . . . . . 6 ⊢ (𝜑 → 𝐶 ≠ 0) | |
| 5 | 3, 1, 4 | sn-redivcld 42887 | . . . . 5 ⊢ (𝜑 → (𝐴 /ℝ 𝐶) ∈ ℝ) |
| 6 | 5 | recnd 11162 | . . . 4 ⊢ (𝜑 → (𝐴 /ℝ 𝐶) ∈ ℂ) |
| 7 | rediv23d.b | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 8 | 7, 1, 4 | sn-redivcld 42887 | . . . . 5 ⊢ (𝜑 → (𝐵 /ℝ 𝐶) ∈ ℝ) |
| 9 | 8 | recnd 11162 | . . . 4 ⊢ (𝜑 → (𝐵 /ℝ 𝐶) ∈ ℂ) |
| 10 | 2, 6, 9 | adddid 11158 | . . 3 ⊢ (𝜑 → (𝐶 · ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶))) = ((𝐶 · (𝐴 /ℝ 𝐶)) + (𝐶 · (𝐵 /ℝ 𝐶)))) |
| 11 | 3, 1, 4 | redivcan2d 42890 | . . . 4 ⊢ (𝜑 → (𝐶 · (𝐴 /ℝ 𝐶)) = 𝐴) |
| 12 | 7, 1, 4 | redivcan2d 42890 | . . . 4 ⊢ (𝜑 → (𝐶 · (𝐵 /ℝ 𝐶)) = 𝐵) |
| 13 | 11, 12 | oveq12d 7376 | . . 3 ⊢ (𝜑 → ((𝐶 · (𝐴 /ℝ 𝐶)) + (𝐶 · (𝐵 /ℝ 𝐶))) = (𝐴 + 𝐵)) |
| 14 | 10, 13 | eqtrd 2772 | . 2 ⊢ (𝜑 → (𝐶 · ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶))) = (𝐴 + 𝐵)) |
| 15 | 3, 7 | readdcld 11163 | . . 3 ⊢ (𝜑 → (𝐴 + 𝐵) ∈ ℝ) |
| 16 | 5, 8 | readdcld 11163 | . . 3 ⊢ (𝜑 → ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶)) ∈ ℝ) |
| 17 | 15, 16, 1, 4 | redivmuld 42888 | . 2 ⊢ (𝜑 → (((𝐴 + 𝐵) /ℝ 𝐶) = ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶)) ↔ (𝐶 · ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶))) = (𝐴 + 𝐵))) |
| 18 | 14, 17 | mpbird 257 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) /ℝ 𝐶) = ((𝐴 /ℝ 𝐶) + (𝐵 /ℝ 𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 (class class class)co 7358 ℝcr 11026 0cc0 11027 + caddc 11030 · cmul 11032 /ℝ crediv 42883 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5517 df-po 5530 df-so 5531 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 df-pnf 11170 df-mnf 11171 df-ltxr 11173 df-2 12233 df-3 12234 df-resub 42809 df-rediv 42884 |
| This theorem is referenced by: (None) |
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