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Theorem 2p4e6 43136
Description: 2 + 4 = 6. (Contributed by SN, 24-Aug-2026.)
Assertion
Ref Expression
2p4e6 (2 + 4) = 6

Proof of Theorem 2p4e6
StepHypRef Expression
1 2cn 12343 . . 3 2 ∈ ℂ
21, 1, 1addassi 11246 . 2 ((2 + 2) + 2) = (2 + (2 + 2))
3 2p2e4 12402 . . . 4 (2 + 2) = 4
43oveq1i 7424 . . 3 ((2 + 2) + 2) = (4 + 2)
5 4p2e6 12420 . . 3 (4 + 2) = 6
64, 5eqtri 2783 . 2 ((2 + 2) + 2) = 6
73oveq2i 7425 . 2 (2 + (2 + 2)) = (2 + 4)
82, 6, 73eqtr3ri 2792 1 (2 + 4) = 6
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   = wceq 1570  (class class class)co 7414   + caddc 11130  2c2 12322  4c4 12324  6c6 12326
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-ext 2732  ax-1cn 11185  ax-addcl 11187  ax-addass 11192
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-iota 6489  df-fv 6541  df-ov 7417  df-2 12330  df-3 12331  df-4 12332  df-5 12333  df-6 12334
This theorem is used by:  2p6e8  43138
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