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Theorem pncan3oi 7227
 Description: Subtraction and addition of equals. Almost but not exactly the same as pncan3i 7288 and pncan 7217, this order happens often when applying "operations to both sides" so create a theorem specifically for it. A deduction version of this is available as pncand 7323. (Contributed by David A. Wheeler, 11-Oct-2018.)
Hypotheses
Ref Expression
pncan3oi.1 𝐴 ∈ ℂ
pncan3oi.2 𝐵 ∈ ℂ
Assertion
Ref Expression
pncan3oi ((𝐴 + 𝐵) − 𝐵) = 𝐴

Proof of Theorem pncan3oi
StepHypRef Expression
1 pncan3oi.1 . 2 𝐴 ∈ ℂ
2 pncan3oi.2 . 2 𝐵 ∈ ℂ
3 pncan 7217 . 2 ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐵) − 𝐵) = 𝐴)
41, 2, 3mp2an 402 1 ((𝐴 + 𝐵) − 𝐵) = 𝐴
 Colors of variables: wff set class Syntax hints:   = wceq 1243   ∈ wcel 1393  (class class class)co 5512  ℂcc 6887   + caddc 6892   − cmin 7182 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-in1 544  ax-in2 545  ax-io 630  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-10 1396  ax-11 1397  ax-i12 1398  ax-bndl 1399  ax-4 1400  ax-14 1405  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022  ax-sep 3875  ax-pow 3927  ax-pr 3944  ax-setind 4262  ax-resscn 6976  ax-1cn 6977  ax-icn 6979  ax-addcl 6980  ax-addrcl 6981  ax-mulcl 6982  ax-addcom 6984  ax-addass 6986  ax-distr 6988  ax-i2m1 6989  ax-0id 6992  ax-rnegex 6993  ax-cnre 6995 This theorem depends on definitions:  df-bi 110  df-3an 887  df-tru 1246  df-fal 1249  df-nf 1350  df-sb 1646  df-eu 1903  df-mo 1904  df-clab 2027  df-cleq 2033  df-clel 2036  df-nfc 2167  df-ne 2206  df-ral 2311  df-rex 2312  df-reu 2313  df-rab 2315  df-v 2559  df-sbc 2765  df-dif 2920  df-un 2922  df-in 2924  df-ss 2931  df-pw 3361  df-sn 3381  df-pr 3382  df-op 3384  df-uni 3581  df-br 3765  df-opab 3819  df-id 4030  df-xp 4351  df-rel 4352  df-cnv 4353  df-co 4354  df-dm 4355  df-iota 4867  df-fun 4904  df-fv 4910  df-riota 5468  df-ov 5515  df-oprab 5516  df-mpt2 5517  df-sub 7184 This theorem is referenced by:  mvrraddi  7228  mvlladdi  7229  resqrexlemcalc1  9612
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