| Step | Hyp | Ref
| Expression |
| 1 | | nncdiv3 6278 |
. 2
 Nn  Nn           1c      2c   |
| 2 | | id 19 |
. . . . . . 7
 Nn Nn  |
| 3 | | nntccl 6171 |
. . . . . . 7
 Nn Tc Nn  |
| 4 | | nnc3n3p2 6280 |
. . . . . . 7
  Nn Tc Nn    
  Tc Tc 
Tc 
2c  |
| 5 | 2, 3, 4 | syl2anc 642 |
. . . . . 6
 Nn    
  Tc Tc 
Tc 
2c  |
| 6 | | nncaddccl 4420 |
. . . . . . . . . . . 12
  Nn Nn   Nn  |
| 7 | 6 | anidms 626 |
. . . . . . . . . . 11
 Nn  
Nn  |
| 8 | | nnnc 6147 |
. . . . . . . . . . 11
   Nn  
NC  |
| 9 | 7, 8 | syl 15 |
. . . . . . . . . 10
 Nn  
NC  |
| 10 | | nnnc 6147 |
. . . . . . . . . 10
 Nn NC  |
| 11 | | tcdi 6165 |
. . . . . . . . . 10
   
NC
NC Tc     Tc   Tc    |
| 12 | 9, 10, 11 | syl2anc 642 |
. . . . . . . . 9
 Nn Tc     Tc   Tc    |
| 13 | | tcdi 6165 |
. . . . . . . . . . 11
  NC NC Tc 

Tc Tc    |
| 14 | 10, 10, 13 | syl2anc 642 |
. . . . . . . . . 10
 Nn Tc   Tc Tc    |
| 15 | 14 | addceq1d 4390 |
. . . . . . . . 9
 Nn Tc   Tc   Tc Tc  Tc    |
| 16 | 12, 15 | eqtrd 2385 |
. . . . . . . 8
 Nn Tc      Tc Tc  Tc    |
| 17 | 16 | addceq1d 4390 |
. . . . . . 7
 Nn Tc     2c   Tc Tc  Tc  2c  |
| 18 | 17 | eqeq2d 2364 |
. . . . . 6
 Nn     
Tc     2c       Tc Tc  Tc  2c   |
| 19 | 5, 18 | mtbird 292 |
. . . . 5
 Nn    
Tc     2c  |
| 20 | | id 19 |
. . . . . . 7
           |
| 21 | | tceq 6159 |
. . . . . . . 8
     Tc Tc       |
| 22 | 21 | addceq1d 4390 |
. . . . . . 7
     Tc 2c Tc     2c  |
| 23 | 20, 22 | eqeq12d 2367 |
. . . . . 6
      Tc 2c     Tc     2c   |
| 24 | 23 | notbid 285 |
. . . . 5
     
Tc 2c    
Tc     2c   |
| 25 | 19, 24 | syl5ibrcom 213 |
. . . 4
 Nn      Tc 2c   |
| 26 | | nncaddccl 4420 |
. . . . . . . . . 10
   
Nn
Nn     Nn  |
| 27 | 7, 2, 26 | syl2anc 642 |
. . . . . . . . 9
 Nn   

Nn  |
| 28 | | nntccl 6171 |
. . . . . . . . . . 11
     Nn Tc     Nn  |
| 29 | 27, 28 | syl 15 |
. . . . . . . . . 10
 Nn Tc     Nn  |
| 30 | | 2nnc 6168 |
. . . . . . . . . 10
2c
Nn |
| 31 | | nncaddccl 4420 |
. . . . . . . . . 10
 Tc     Nn 2c Nn Tc     2c Nn  |
| 32 | 29, 30, 31 | sylancl 643 |
. . . . . . . . 9
 Nn Tc     2c Nn  |
| 33 | | suc11nnc 4559 |
. . . . . . . . 9
    

Nn
Tc     2c Nn      
1c
 Tc    
2c
1c
   
Tc     2c   |
| 34 | 27, 32, 33 | syl2anc 642 |
. . . . . . . 8
 Nn      
1c
 Tc    
2c
1c
   
Tc     2c   |
| 35 | 19, 34 | mtbird 292 |
. . . . . . 7
 Nn     
1c
 Tc    
2c
1c  |
| 36 | | addc32 4417 |
. . . . . . . . 9
 Tc     Tc 1c 2c
 Tc     2c Tc
1c |
| 37 | | tc1c 6166 |
. . . . . . . . . 10
Tc 1c 1c |
| 38 | 37 | addceq2i 4388 |
. . . . . . . . 9
 Tc    
2c
Tc 1c  Tc     2c 1c |
| 39 | 36, 38 | eqtri 2373 |
. . . . . . . 8
 Tc     Tc 1c 2c
 Tc     2c 1c |
| 40 | 39 | eqeq2i 2363 |
. . . . . . 7
    
 1c  Tc     Tc 1c 2c      1c  Tc    
2c
1c  |
| 41 | 35, 40 | sylnibr 296 |
. . . . . 6
 Nn     
1c
 Tc     Tc 1c 2c  |
| 42 | | nnnc 6147 |
. . . . . . . . . 10
     Nn  
  NC  |
| 43 | 27, 42 | syl 15 |
. . . . . . . . 9
 Nn   

NC  |
| 44 | | 1cnc 6140 |
. . . . . . . . 9
1c
NC |
| 45 | | tcdi 6165 |
. . . . . . . . 9
    

NC 1c NC Tc      1c
Tc     Tc 1c  |
| 46 | 43, 44, 45 | sylancl 643 |
. . . . . . . 8
 Nn Tc      1c
Tc     Tc 1c  |
| 47 | 46 | addceq1d 4390 |
. . . . . . 7
 Nn Tc    
 1c
2c
 Tc     Tc 1c 2c  |
| 48 | 47 | eqeq2d 2364 |
. . . . . 6
 Nn      
1c
Tc    
 1c
2c
  
  1c  Tc     Tc 1c 2c   |
| 49 | 41, 48 | mtbird 292 |
. . . . 5
 Nn     
1c
Tc    
 1c
2c  |
| 50 | | id 19 |
. . . . . . 7
     
1c
   
 1c  |
| 51 | | tceq 6159 |
. . . . . . . 8
     
1c
Tc
Tc    
 1c  |
| 52 | 51 | addceq1d 4390 |
. . . . . . 7
     
1c
Tc 2c Tc    
 1c
2c  |
| 53 | 50, 52 | eqeq12d 2367 |
. . . . . 6
     
1c

Tc 2c     
1c
Tc    
 1c
2c   |
| 54 | 53 | notbid 285 |
. . . . 5
     
1c
 Tc 2c      1c
Tc    
 1c
2c   |
| 55 | 49, 54 | syl5ibrcom 213 |
. . . 4
 Nn     
 1c
Tc 2c   |
| 56 | | peano2 4404 |
. . . . . . . . 9
 Nn 
1c
Nn  |
| 57 | | nntccl 6171 |
. . . . . . . . 9
 
1c
Nn Tc 
1c
Nn  |
| 58 | 56, 57 | syl 15 |
. . . . . . . 8
 Nn Tc  1c
Nn  |
| 59 | | nnc3p1n3p2 6281 |
. . . . . . . 8
 Tc  1c
Nn
Nn  
Tc 
1c
Tc 
1c Tc 
1c
1c
     2c  |
| 60 | 58, 2, 59 | syl2anc 642 |
. . . . . . 7
 Nn   Tc  1c Tc 
1c Tc 
1c
1c
     2c  |
| 61 | | eqcom 2355 |
. . . . . . 7
    
 2c   Tc 
1c
Tc 
1c Tc 
1c
1c
  Tc  1c Tc 
1c Tc 
1c
1c
     2c  |
| 62 | 60, 61 | sylnibr 296 |
. . . . . 6
 Nn     
2c
 
Tc 
1c
Tc 
1c Tc 
1c
1c  |
| 63 | | addcass 4416 |
. . . . . . . . 9
    Tc 1c Tc 1c Tc 
1c
1c
   Tc 1c Tc 1c Tc 
1c 1c  |
| 64 | | addcass 4416 |
. . . . . . . . . 10
   Tc 1c Tc 1c Tc 
1c
 
Tc 1c Tc 1c Tc 1c  |
| 65 | 64 | addceq1i 4387 |
. . . . . . . . 9
    Tc 1c Tc 1c Tc 
1c
1c
   Tc 1c Tc 1c Tc 1c
1c |
| 66 | | 1p1e2c 6156 |
. . . . . . . . . . . . . 14
1c
1c
2c |
| 67 | 66 | addceq2i 4388 |
. . . . . . . . . . . . 13
 Tc Tc 
1c 1c
 Tc Tc  2c |
| 68 | | addc4 4418 |
. . . . . . . . . . . . 13
 Tc 1c
Tc 1c  Tc Tc  1c 1c  |
| 69 | | tc2c 6167 |
. . . . . . . . . . . . . 14
Tc 2c 2c |
| 70 | 69 | addceq2i 4388 |
. . . . . . . . . . . . 13
 Tc Tc 
Tc 2c  Tc Tc  2c |
| 71 | 67, 68, 70 | 3eqtr4i 2383 |
. . . . . . . . . . . 12
 Tc 1c
Tc 1c  Tc Tc  Tc
2c |
| 72 | 71 | addceq1i 4387 |
. . . . . . . . . . 11
  Tc 1c Tc 1c Tc 
 
Tc Tc  Tc 2c Tc   |
| 73 | | addc32 4417 |
. . . . . . . . . . 11
  Tc Tc  Tc
2c
Tc 
 
Tc Tc  Tc  Tc 2c |
| 74 | 72, 73 | eqtri 2373 |
. . . . . . . . . 10
  Tc 1c Tc 1c Tc 
 
Tc Tc  Tc  Tc 2c |
| 75 | 74, 66 | addceq12i 4389 |
. . . . . . . . 9
   Tc 1c Tc 1c Tc 
1c 1c
  
Tc Tc  Tc  Tc 2c 2c |
| 76 | 63, 65, 75 | 3eqtr3ri 2382 |
. . . . . . . 8
   Tc Tc  Tc  Tc 2c 2c    Tc 1c
Tc 1c Tc 1c
1c |
| 77 | | 2nc 6169 |
. . . . . . . . . . 11
2c
NC |
| 78 | | tcdi 6165 |
. . . . . . . . . . 11
    

NC 2c NC Tc      2c
Tc     Tc 2c  |
| 79 | 43, 77, 78 | sylancl 643 |
. . . . . . . . . 10
 Nn Tc      2c
Tc     Tc 2c  |
| 80 | 16 | addceq1d 4390 |
. . . . . . . . . 10
 Nn Tc     Tc 2c   Tc Tc  Tc  Tc 2c  |
| 81 | 79, 80 | eqtrd 2385 |
. . . . . . . . 9
 Nn Tc      2c   Tc Tc  Tc  Tc 2c  |
| 82 | 81 | addceq1d 4390 |
. . . . . . . 8
 Nn Tc    
 2c
2c
   Tc Tc  Tc  Tc 2c 2c  |
| 83 | | tcdi 6165 |
. . . . . . . . . . . . 13
  NC 1c NC Tc 
1c
Tc Tc 1c  |
| 84 | 10, 44, 83 | sylancl 643 |
. . . . . . . . . . . 12
 Nn Tc  1c
Tc Tc 1c  |
| 85 | 37 | addceq2i 4388 |
. . . . . . . . . . . 12
Tc Tc 1c Tc 1c |
| 86 | 84, 85 | syl6eq 2401 |
. . . . . . . . . . 11
 Nn Tc  1c
Tc 1c  |
| 87 | 86, 86 | addceq12d 4392 |
. . . . . . . . . 10
 Nn Tc 
1c
Tc 
1c  Tc 1c Tc 1c   |
| 88 | 87, 86 | addceq12d 4392 |
. . . . . . . . 9
 Nn  Tc 
1c
Tc 
1c Tc 
1c   Tc 1c Tc 1c Tc 1c   |
| 89 | 88 | addceq1d 4390 |
. . . . . . . 8
 Nn   Tc 
1c
Tc 
1c Tc 
1c
1c
   Tc 1c Tc 1c Tc 1c
1c  |
| 90 | 76, 82, 89 | 3eqtr4a 2411 |
. . . . . . 7
 Nn Tc    
 2c
2c
 
Tc 
1c
Tc 
1c Tc 
1c
1c  |
| 91 | 90 | eqeq2d 2364 |
. . . . . 6
 Nn      
2c
Tc    
 2c
2c
  
  2c   Tc 
1c
Tc 
1c Tc 
1c
1c   |
| 92 | 62, 91 | mtbird 292 |
. . . . 5
 Nn     
2c
Tc    
 2c
2c  |
| 93 | | id 19 |
. . . . . . 7
     
2c
   
 2c  |
| 94 | | tceq 6159 |
. . . . . . . 8
     
2c
Tc
Tc    
 2c  |
| 95 | 94 | addceq1d 4390 |
. . . . . . 7
     
2c
Tc 2c Tc    
 2c
2c  |
| 96 | 93, 95 | eqeq12d 2367 |
. . . . . 6
     
2c

Tc 2c     
2c
Tc    
 2c
2c   |
| 97 | 96 | notbid 285 |
. . . . 5
     
2c
 Tc 2c      2c
Tc    
 2c
2c   |
| 98 | 92, 97 | syl5ibrcom 213 |
. . . 4
 Nn     
 2c
Tc 2c   |
| 99 | 25, 55, 98 | 3jaod 1246 |
. . 3
 Nn            1c      2c Tc 2c   |
| 100 | 99 | rexlimiv 2733 |
. 2
 
Nn           1c      2c Tc 2c  |
| 101 | 1, 100 | syl 15 |
1
 Nn Tc 2c  |