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Theorem 3p3e6 9382
Description: 3 + 3 = 6. (Contributed by NM, 11-May-2004.)
Assertion
Ref Expression
3p3e6  |-  ( 3  +  3 )  =  6

Proof of Theorem 3p3e6
StepHypRef Expression
1 df-3 9299 . . . 4  |-  3  =  ( 2  +  1 )
21oveq2i 6063 . . 3  |-  ( 3  +  3 )  =  ( 3  +  ( 2  +  1 ) )
3 3cn 9314 . . . 4  |-  3  e.  CC
4 2cn 9310 . . . 4  |-  2  e.  CC
5 ax-1cn 8222 . . . 4  |-  1  e.  CC
63, 4, 5addassi 8284 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 3  +  ( 2  +  1 ) )
72, 6eqtr4i 2258 . 2  |-  ( 3  +  3 )  =  ( ( 3  +  2 )  +  1 )
8 df-6 9302 . . 3  |-  6  =  ( 5  +  1 )
9 3p2e5 9381 . . . 4  |-  ( 3  +  2 )  =  5
109oveq1i 6062 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 5  +  1 )
118, 10eqtr4i 2258 . 2  |-  6  =  ( ( 3  +  2 )  +  1 )
127, 11eqtr4i 2258 1  |-  ( 3  +  3 )  =  6
Colors of variables: wff set class
Syntax hints:    = wceq 1398  (class class class)co 6052   1c1 8130    + caddc 8132   2c2 9290   3c3 9291   5c5 9293   6c6 9294
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-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2216  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-addrcl 8226  ax-addass 8231
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-rex 2528  df-v 2817  df-un 3217  df-in 3219  df-ss 3226  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-iota 5314  df-fv 5362  df-ov 6055  df-2 9298  df-3 9299  df-4 9300  df-5 9301  df-6 9302
This theorem is referenced by:  3t2e6  9396  binom4  15861  ex-dvds  16515  ex-gcd  16516
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