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Theorem 3p2e5 9263
Description: 3 + 2 = 5. (Contributed by NM, 11-May-2004.)
Assertion
Ref Expression
3p2e5  |-  ( 3  +  2 )  =  5

Proof of Theorem 3p2e5
StepHypRef Expression
1 df-2 9180 . . . . 5  |-  2  =  ( 1  +  1 )
21oveq2i 6018 . . . 4  |-  ( 3  +  2 )  =  ( 3  +  ( 1  +  1 ) )
3 3cn 9196 . . . . 5  |-  3  e.  CC
4 ax-1cn 8103 . . . . 5  |-  1  e.  CC
53, 4, 4addassi 8165 . . . 4  |-  ( ( 3  +  1 )  +  1 )  =  ( 3  +  ( 1  +  1 ) )
62, 5eqtr4i 2253 . . 3  |-  ( 3  +  2 )  =  ( ( 3  +  1 )  +  1 )
7 df-4 9182 . . . 4  |-  4  =  ( 3  +  1 )
87oveq1i 6017 . . 3  |-  ( 4  +  1 )  =  ( ( 3  +  1 )  +  1 )
96, 8eqtr4i 2253 . 2  |-  ( 3  +  2 )  =  ( 4  +  1 )
10 df-5 9183 . 2  |-  5  =  ( 4  +  1 )
119, 10eqtr4i 2253 1  |-  ( 3  +  2 )  =  5
Colors of variables: wff set class
Syntax hints:    = wceq 1395  (class class class)co 6007   1c1 8011    + caddc 8013   2c2 9172   3c3 9173   4c4 9174   5c5 9175
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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211  ax-resscn 8102  ax-1cn 8103  ax-1re 8104  ax-addrcl 8107  ax-addass 8112
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-rex 2514  df-v 2801  df-un 3201  df-in 3203  df-ss 3210  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-br 4084  df-iota 5278  df-fv 5326  df-ov 6010  df-2 9180  df-3 9181  df-4 9182  df-5 9183
This theorem is referenced by:  3p3e6  9264  2exp5  12971  2exp16  12976  2lgsoddprmlem3d  15805
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