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Mirrors > Home > MPE Home > Th. List > Mathboxes > repnpcan | Structured version Visualization version GIF version |
Description: Cancellation law for addition and real subtraction. Compare pnpcan 10976. (Contributed by Steven Nguyen, 19-May-2023.) |
Ref | Expression |
---|---|
repnpcan | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ (𝐴 + 𝐶)) = (𝐵 −ℝ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | readdcl 10671 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) | |
2 | resubsub4 39904 | . . 3 ⊢ (((𝐴 + 𝐵) ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (((𝐴 + 𝐵) −ℝ 𝐴) −ℝ 𝐶) = ((𝐴 + 𝐵) −ℝ (𝐴 + 𝐶))) | |
3 | 1, 2 | stoic4a 1779 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (((𝐴 + 𝐵) −ℝ 𝐴) −ℝ 𝐶) = ((𝐴 + 𝐵) −ℝ (𝐴 + 𝐶))) |
4 | repncan2 39897 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐴) = 𝐵) | |
5 | 4 | 3adant3 1129 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ 𝐴) = 𝐵) |
6 | 5 | oveq1d 7171 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (((𝐴 + 𝐵) −ℝ 𝐴) −ℝ 𝐶) = (𝐵 −ℝ 𝐶)) |
7 | 3, 6 | eqtr3d 2795 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) −ℝ (𝐴 + 𝐶)) = (𝐵 −ℝ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 (class class class)co 7156 ℝcr 10587 + caddc 10591 −ℝ cresub 39880 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-resscn 10645 ax-addrcl 10649 ax-addass 10653 ax-rnegex 10659 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4802 df-br 5037 df-opab 5099 df-mpt 5117 df-id 5434 df-po 5447 df-so 5448 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-er 8305 df-en 8541 df-dom 8542 df-sdom 8543 df-pnf 10728 df-mnf 10729 df-ltxr 10731 df-resub 39881 |
This theorem is referenced by: reppncan 39908 remul02 39920 |
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