Step |
Hyp |
Ref |
Expression |
1 |
|
zdivgd.1 |
|
2 |
|
zdivgd.2 |
|
3 |
|
zdivgd.3 |
|
4 |
|
zcn |
|
5 |
4
|
adantl |
|
6 |
1
|
adantr |
|
7 |
3
|
adantr |
|
8 |
5 6 7
|
divcan3d |
|
9 |
|
oveq1 |
|
10 |
8 9
|
sylan9req |
|
11 |
|
simplr |
|
12 |
10 11
|
eqeltrrd |
|
13 |
12
|
rexlimdva2 |
|
14 |
2 1 3
|
divcan2d |
|
15 |
|
oveq2 |
|
16 |
15
|
eqeq1d |
|
17 |
16
|
rspcev |
|
18 |
17
|
ex |
|
19 |
14 18
|
syl5com |
|
20 |
13 19
|
impbid |
|