| Step | 
						Hyp | 
						Ref | 
						Expression | 
					
						
							| 1 | 
							
								
							 | 
							latlej.b | 
							   | 
						
						
							| 2 | 
							
								
							 | 
							latlej.l | 
							   | 
						
						
							| 3 | 
							
								
							 | 
							latlej.j | 
							   | 
						
						
							| 4 | 
							
								1 2 3
							 | 
							latlej1 | 
							   | 
						
						
							| 5 | 
							
								4
							 | 
							3adant3r1 | 
							   | 
						
						
							| 6 | 
							
								
							 | 
							simpl | 
							   | 
						
						
							| 7 | 
							
								
							 | 
							simpr1 | 
							   | 
						
						
							| 8 | 
							
								
							 | 
							simpr2 | 
							   | 
						
						
							| 9 | 
							
								1 3
							 | 
							latjcl | 
							   | 
						
						
							| 10 | 
							
								9
							 | 
							3adant3r1 | 
							   | 
						
						
							| 11 | 
							
								1 2
							 | 
							lattr | 
							   | 
						
						
							| 12 | 
							
								6 7 8 10 11
							 | 
							syl13anc | 
							   | 
						
						
							| 13 | 
							
								5 12
							 | 
							mpan2d | 
							   | 
						
						
							| 14 | 
							
								13
							 | 
							con3d | 
							   | 
						
						
							| 15 | 
							
								1 2 3
							 | 
							latlej2 | 
							   | 
						
						
							| 16 | 
							
								15
							 | 
							3adant3r1 | 
							   | 
						
						
							| 17 | 
							
								
							 | 
							simpr3 | 
							   | 
						
						
							| 18 | 
							
								1 2
							 | 
							lattr | 
							   | 
						
						
							| 19 | 
							
								6 7 17 10 18
							 | 
							syl13anc | 
							   | 
						
						
							| 20 | 
							
								16 19
							 | 
							mpan2d | 
							   | 
						
						
							| 21 | 
							
								20
							 | 
							con3d | 
							   | 
						
						
							| 22 | 
							
								14 21
							 | 
							jcad | 
							   | 
						
						
							| 23 | 
							
								22
							 | 
							3impia | 
							   |