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Theorem 6p2e8 11784
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 11688 . . . . 5 2 = (1 + 1)
21oveq2i 7146 . . . 4 (6 + 2) = (6 + (1 + 1))
3 6cn 11716 . . . . 5 6 ∈ ℂ
4 ax-1cn 10584 . . . . 5 1 ∈ ℂ
53, 4, 4addassi 10640 . . . 4 ((6 + 1) + 1) = (6 + (1 + 1))
62, 5eqtr4i 2824 . . 3 (6 + 2) = ((6 + 1) + 1)
7 df-7 11693 . . . 4 7 = (6 + 1)
87oveq1i 7145 . . 3 (7 + 1) = ((6 + 1) + 1)
96, 8eqtr4i 2824 . 2 (6 + 2) = (7 + 1)
10 df-8 11694 . 2 8 = (7 + 1)
119, 10eqtr4i 2824 1 (6 + 2) = 8
Colors of variables: wff setvar class
Syntax hints:   = wceq 1538  (class class class)co 7135  1c1 10527   + caddc 10529  2c2 11680  6c6 11684  7c7 11685  8c8 11686
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-ext 2770  ax-1cn 10584  ax-addcl 10586  ax-addass 10591
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-ex 1782  df-sb 2070  df-clab 2777  df-cleq 2791  df-clel 2870  df-v 3443  df-un 3886  df-in 3888  df-ss 3898  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-iota 6283  df-fv 6332  df-ov 7138  df-2 11688  df-3 11689  df-4 11690  df-5 11691  df-6 11692  df-7 11693  df-8 11694
This theorem is referenced by:  6p3e9  11785  6t3e18  12191  83prm  16448  1259lem2  16457  1259lem5  16460  2503lem2  16463  2503lem3  16464  4001lem1  16466  log2ub  25535  hgt750lem2  32033  3cubeslem3l  39627  resqrtvalex  40345  imsqrtvalex  40346  lhe4.4ex1a  41033  fmtno5faclem3  44098
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