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Mirrors > Home > MPE Home > Th. List > Mathboxes > renpncan3 | Structured version Visualization version GIF version |
Description: Cancellation law for real subtraction. Compare npncan3 10923. (Contributed by Steven Nguyen, 28-Jan-2023.) |
Ref | Expression |
---|---|
renpncan3 | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 −ℝ 𝐵) + (𝐶 −ℝ 𝐴)) = (𝐶 −ℝ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp1 1132 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐴 ∈ ℝ) | |
2 | rersubcl 39206 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐶 −ℝ 𝐴) ∈ ℝ) | |
3 | 2 | ancoms 461 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 −ℝ 𝐴) ∈ ℝ) |
4 | 3 | 3adant2 1127 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 −ℝ 𝐴) ∈ ℝ) |
5 | simp2 1133 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → 𝐵 ∈ ℝ) | |
6 | readdsub 39212 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ (𝐶 −ℝ 𝐴) ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐴 + (𝐶 −ℝ 𝐴)) −ℝ 𝐵) = ((𝐴 −ℝ 𝐵) + (𝐶 −ℝ 𝐴))) | |
7 | 1, 4, 5, 6 | syl3anc 1367 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + (𝐶 −ℝ 𝐴)) −ℝ 𝐵) = ((𝐴 −ℝ 𝐵) + (𝐶 −ℝ 𝐴))) |
8 | repncan3 39211 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 + (𝐶 −ℝ 𝐴)) = 𝐶) | |
9 | 8 | 3adant2 1127 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 + (𝐶 −ℝ 𝐴)) = 𝐶) |
10 | 9 | oveq1d 7170 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + (𝐶 −ℝ 𝐴)) −ℝ 𝐵) = (𝐶 −ℝ 𝐵)) |
11 | 7, 10 | eqtr3d 2858 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 −ℝ 𝐵) + (𝐶 −ℝ 𝐴)) = (𝐶 −ℝ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1083 = wceq 1533 ∈ wcel 2110 (class class class)co 7155 ℝcr 10535 + caddc 10539 −ℝ cresub 39193 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329 ax-un 7460 ax-resscn 10593 ax-addrcl 10597 ax-addass 10601 ax-rnegex 10607 ax-pre-lttri 10610 ax-pre-lttrn 10611 ax-pre-ltadd 10612 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-br 5066 df-opab 5128 df-mpt 5146 df-id 5459 df-po 5473 df-so 5474 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-riota 7113 df-ov 7158 df-oprab 7159 df-mpo 7160 df-er 8288 df-en 8509 df-dom 8510 df-sdom 8511 df-pnf 10676 df-mnf 10677 df-ltxr 10679 df-resub 39194 |
This theorem is referenced by: (None) |
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