| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg7.b |  | 
						
							| 2 |  | cdlemg7.l |  | 
						
							| 3 |  | cdlemg7.a |  | 
						
							| 4 |  | cdlemg7.h |  | 
						
							| 5 |  | cdlemg7.t |  | 
						
							| 6 |  | simpl1 |  | 
						
							| 7 |  | simpl31 |  | 
						
							| 8 |  | simpl32 |  | 
						
							| 9 |  | simpl2r |  | 
						
							| 10 | 1 4 5 | ltrncl |  | 
						
							| 11 | 6 8 9 10 | syl3anc |  | 
						
							| 12 |  | simpr |  | 
						
							| 13 | 1 2 4 5 | ltrnval1 |  | 
						
							| 14 | 6 8 9 12 13 | syl112anc |  | 
						
							| 15 | 14 12 | eqbrtrd |  | 
						
							| 16 | 1 2 4 5 | ltrnval1 |  | 
						
							| 17 | 6 7 11 15 16 | syl112anc |  | 
						
							| 18 | 17 14 | eqtrd |  | 
						
							| 19 |  | simpl1 |  | 
						
							| 20 |  | simpl2l |  | 
						
							| 21 |  | simpl2r |  | 
						
							| 22 |  | simpr |  | 
						
							| 23 | 21 22 | jca |  | 
						
							| 24 |  | simpl31 |  | 
						
							| 25 |  | simpl32 |  | 
						
							| 26 |  | simpl33 |  | 
						
							| 27 | 1 2 3 4 5 | cdlemg7aN |  | 
						
							| 28 | 19 20 23 24 25 26 27 | syl123anc |  | 
						
							| 29 | 18 28 | pm2.61dan |  |