Theorem numadd 9656

Description: Add two decimal integers M and N (no carry). (Contributed by Mario Carneiro, 18-Feb-2014.)

Hypotheses

Ref	Expression
numma.1	|- T e. NN0
numma.2	|- A e. NN0
numma.3	|- B e. NN0
numma.4	|- C e. NN0
numma.5	|- D e. NN0
numma.6	|- M = ( ( T x. A ) + B )
numma.7	|- N = ( ( T x. C ) + D )
numadd.8	|- ( A + C ) = E
numadd.9	|- ( B + D ) = F

Assertion

Ref	Expression
numadd	|- ( M + N ) = ( ( T x. E ) + F )

Proof of Theorem numadd

Step	Hyp	Ref	Expression
1		numma.6	. . . . . 6 |- M = ( ( T x. A ) + B )
2		numma.1	. . . . . . 7 |- T e. NN0
3		numma.2	. . . . . . 7 |- A e. NN0
4		numma.3	. . . . . . 7 |- B e. NN0
5	2, 3, 4	numcl 9622	. . . . . 6 |- ( ( T x. A ) + B ) e. NN0
6	1, 5	eqeltri 2304	. . . . 5 |- M e. NN0
7	6	nn0cni 9413	. . . 4 |- M e. CC
8	7	mulridi 8180	. . 3 |- ( M x. 1 ) = M
9	8	oveq1i 6027	. 2 |- ( ( M x. 1 ) + N ) = ( M + N )
10		numma.4	. . 3 |- C e. NN0
11		numma.5	. . 3 |- D e. NN0
12		numma.7	. . 3 |- N = ( ( T x. C ) + D )
13		1nn0 9417	. . 3 |- 1 e. NN0
14	3	nn0cni 9413	. . . . . 6 |- A e. CC
15	14	mulridi 8180	. . . . 5 |- ( A x. 1 ) = A
16	15	oveq1i 6027	. . . 4 |- ( ( A x. 1 ) + C ) = ( A + C )
17		numadd.8	. . . 4 |- ( A + C ) = E
18	16, 17	eqtri 2252	. . 3 |- ( ( A x. 1 ) + C ) = E
19	4	nn0cni 9413	. . . . . 6 |- B e. CC
20	19	mulridi 8180	. . . . 5 |- ( B x. 1 ) = B
21	20	oveq1i 6027	. . . 4 |- ( ( B x. 1 ) + D ) = ( B + D )
22		numadd.9	. . . 4 |- ( B + D ) = F
23	21, 22	eqtri 2252	. . 3 |- ( ( B x. 1 ) + D ) = F
24	2, 3, 4, 10, 11, 1, 12, 13, 18, 23	numma 9653	. 2 |- ( ( M x. 1 ) + N ) = ( ( T x. E ) + F )
25	9, 24	eqtr3i 2254	1 |- ( M + N ) = ( ( T x. E ) + F )

Syntax hints:   = wceq 1397   e. wcel 2202  (class class class)co 6017   1c1 8032   + caddc 8034   x. cmul 8036   NN0cn0 9401

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-in1 619  ax-in2 620  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-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-mulcom 8132  ax-addass 8133  ax-mulass 8134  ax-distr 8135  ax-i2m1 8136  ax-1rid 8138  ax-0id 8139  ax-rnegex 8140  ax-cnre 8142

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-iota 5286  df-fun 5328  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-sub 8351  df-inn 9143  df-n0 9402

This theorem is referenced by:  decadd  9663