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Theorem addneintr2d 8509
Description: Introducing a term on the right-hand side of a sum in a negated equality. Contrapositive of addcan2ad 8507. Consequence of addcan2d 8505. (Contributed by David Moews, 28-Feb-2017.)
Hypotheses
Ref Expression
addcand.1 (𝜑𝐴 ∈ ℂ)
addcand.2 (𝜑𝐵 ∈ ℂ)
addcand.3 (𝜑𝐶 ∈ ℂ)
addneintr2d.4 (𝜑𝐴𝐵)
Assertion
Ref Expression
addneintr2d (𝜑 → (𝐴 + 𝐶) ≠ (𝐵 + 𝐶))

Proof of Theorem addneintr2d
StepHypRef Expression
1 addneintr2d.4 . 2 (𝜑𝐴𝐵)
2 addcand.1 . . . 4 (𝜑𝐴 ∈ ℂ)
3 addcand.2 . . . 4 (𝜑𝐵 ∈ ℂ)
4 addcand.3 . . . 4 (𝜑𝐶 ∈ ℂ)
52, 3, 4addcan2d 8505 . . 3 (𝜑 → ((𝐴 + 𝐶) = (𝐵 + 𝐶) ↔ 𝐴 = 𝐵))
65necon3bid 2461 . 2 (𝜑 → ((𝐴 + 𝐶) ≠ (𝐵 + 𝐶) ↔ 𝐴𝐵))
71, 6mpbird 167 1 (𝜑 → (𝐴 + 𝐶) ≠ (𝐵 + 𝐶))
Colors of variables: wff set class
Syntax hints:  wi 4  wcel 2209  wne 2420  (class class class)co 6079  cc 8171   + caddc 8176
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-resscn 8265  ax-1cn 8266  ax-icn 8268  ax-addcl 8269  ax-addrcl 8270  ax-mulcl 8271  ax-addcom 8273  ax-addass 8275  ax-distr 8277  ax-i2m1 8278  ax-0id 8281  ax-rnegex 8282  ax-cnre 8284
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-iota 5335  df-fv 5383  df-ov 6082
This theorem is referenced by:  modsumfzodifsn  10816
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