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Theorem 6p2e8 12326
Description: 6 + 2 = 8. (Contributed by NM, 11-May-2004.)
Assertion
Ref Expression
6p2e8 (6 + 2) = 8

Proof of Theorem 6p2e8
StepHypRef Expression
1 df-2 12235 . . . . 5 2 = (1 + 1)
21oveq2i 7367 . . . 4 (6 + 2) = (6 + (1 + 1))
3 6cn 12263 . . . . 5 6 ∈ ℂ
4 ax-1cn 11087 . . . . 5 1 ∈ ℂ
53, 4, 4addassi 11146 . . . 4 ((6 + 1) + 1) = (6 + (1 + 1))
62, 5eqtr4i 2765 . . 3 (6 + 2) = ((6 + 1) + 1)
7 df-7 12240 . . . 4 7 = (6 + 1)
87oveq1i 7366 . . 3 (7 + 1) = ((6 + 1) + 1)
96, 8eqtr4i 2765 . 2 (6 + 2) = (7 + 1)
10 df-8 12241 . 2 8 = (7 + 1)
119, 10eqtr4i 2765 1 (6 + 2) = 8
Colors of variables: wff setvar class
Syntax hints:   = wceq 1547  (class class class)co 7356  1c1 11030   + caddc 11032  2c2 12227  6c6 12231  7c7 12232  8c8 12233
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-ext 2711  ax-1cn 11087  ax-addcl 11089  ax-addass 11094
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-sb 2074  df-clab 2718  df-cleq 2731  df-clel 2814  df-rab 3392  df-v 3433  df-dif 3886  df-un 3888  df-ss 3900  df-nul 4262  df-if 4455  df-sn 4556  df-pr 4558  df-op 4562  df-uni 4839  df-br 5073  df-iota 6441  df-fv 6493  df-ov 7359  df-2 12235  df-3 12236  df-4 12237  df-5 12238  df-6 12239  df-7 12240  df-8 12241
This theorem is referenced by:  6p3e9  12327  6t3e18  12740  83prm  17084  1259lem2  17093  1259lem5  17096  2503lem2  17099  2503lem3  17100  4001lem1  17102  log2ub  26931  hgt750lem2  34836  3exp7  42538  3cubeslem3l  43135  resqrtvalex  44089  imsqrtvalex  44090  lhe4.4ex1a  44773  sin5tlem5  47340  fmtno5faclem3  48059
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