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Theorem 3p3e6 9291
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 9208 . . . 4  |-  3  =  ( 2  +  1 )
21oveq2i 6034 . . 3  |-  ( 3  +  3 )  =  ( 3  +  ( 2  +  1 ) )
3 3cn 9223 . . . 4  |-  3  e.  CC
4 2cn 9219 . . . 4  |-  2  e.  CC
5 ax-1cn 8130 . . . 4  |-  1  e.  CC
63, 4, 5addassi 8192 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 3  +  ( 2  +  1 ) )
72, 6eqtr4i 2254 . 2  |-  ( 3  +  3 )  =  ( ( 3  +  2 )  +  1 )
8 df-6 9211 . . 3  |-  6  =  ( 5  +  1 )
9 3p2e5 9290 . . . 4  |-  ( 3  +  2 )  =  5
109oveq1i 6033 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 5  +  1 )
118, 10eqtr4i 2254 . 2  |-  6  =  ( ( 3  +  2 )  +  1 )
127, 11eqtr4i 2254 1  |-  ( 3  +  3 )  =  6
Colors of variables: wff set class
Syntax hints:    = wceq 1397  (class class class)co 6023   1c1 8038    + caddc 8040   2c2 9199   3c3 9200   5c5 9202   6c6 9203
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2212  ax-resscn 8129  ax-1cn 8130  ax-1re 8131  ax-addrcl 8134  ax-addass 8139
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1810  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-rex 2515  df-v 2803  df-un 3203  df-in 3205  df-ss 3212  df-sn 3676  df-pr 3677  df-op 3679  df-uni 3895  df-br 4090  df-iota 5288  df-fv 5336  df-ov 6026  df-2 9207  df-3 9208  df-4 9209  df-5 9210  df-6 9211
This theorem is referenced by:  3t2e6  9305  binom4  15732  ex-dvds  16383  ex-gcd  16384
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