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Theorem renegadd 40355
Description: Relationship between real negation and addition. (Contributed by Steven Nguyen, 7-Jan-2023.)
Assertion
Ref Expression
renegadd ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((0 − 𝐴) = 𝐵 ↔ (𝐴 + 𝐵) = 0))

Proof of Theorem renegadd
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 elre0re 40291 . . . . 5 (𝐴 ∈ ℝ → 0 ∈ ℝ)
2 resubval 40350 . . . . 5 ((0 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (0 − 𝐴) = (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0))
31, 2mpancom 685 . . . 4 (𝐴 ∈ ℝ → (0 − 𝐴) = (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0))
43eqeq1d 2740 . . 3 (𝐴 ∈ ℝ → ((0 − 𝐴) = 𝐵 ↔ (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) = 𝐵))
54adantr 481 . 2 ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((0 − 𝐴) = 𝐵 ↔ (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) = 𝐵))
6 renegeu 40353 . . . 4 (𝐴 ∈ ℝ → ∃!𝑥 ∈ ℝ (𝐴 + 𝑥) = 0)
7 oveq2 7283 . . . . . 6 (𝑥 = 𝐵 → (𝐴 + 𝑥) = (𝐴 + 𝐵))
87eqeq1d 2740 . . . . 5 (𝑥 = 𝐵 → ((𝐴 + 𝑥) = 0 ↔ (𝐴 + 𝐵) = 0))
98riota2 7258 . . . 4 ((𝐵 ∈ ℝ ∧ ∃!𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) → ((𝐴 + 𝐵) = 0 ↔ (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) = 𝐵))
106, 9sylan2 593 . . 3 ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐴 + 𝐵) = 0 ↔ (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) = 𝐵))
1110ancoms 459 . 2 ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐴 + 𝐵) = 0 ↔ (𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) = 𝐵))
125, 11bitr4d 281 1 ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((0 − 𝐴) = 𝐵 ↔ (𝐴 + 𝐵) = 0))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396   = wceq 1539  wcel 2106  ∃!wreu 3066  crio 7231  (class class class)co 7275  cr 10870  0cc0 10871   + caddc 10874   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-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:  renegid  40356  resubeulem1  40358  sn-inelr  40435
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