| Step | Hyp | Ref | Expression | 
						
							| 1 |  | ax-hv0cl |  | 
						
							| 2 |  | lnopl |  | 
						
							| 3 | 1 2 | mpanr2 |  | 
						
							| 4 | 3 | 3impa |  | 
						
							| 5 |  | hvmulcl |  | 
						
							| 6 |  | ax-hvaddid |  | 
						
							| 7 | 5 6 | syl |  | 
						
							| 8 | 7 | 3adant1 |  | 
						
							| 9 | 8 | fveq2d |  | 
						
							| 10 |  | lnop0 |  | 
						
							| 11 | 10 | oveq2d |  | 
						
							| 12 | 11 | 3ad2ant1 |  | 
						
							| 13 |  | lnopf |  | 
						
							| 14 | 13 | ffvelcdmda |  | 
						
							| 15 |  | hvmulcl |  | 
						
							| 16 | 14 15 | sylan2 |  | 
						
							| 17 | 16 | 3impb |  | 
						
							| 18 | 17 | 3com12 |  | 
						
							| 19 |  | ax-hvaddid |  | 
						
							| 20 | 18 19 | syl |  | 
						
							| 21 | 12 20 | eqtrd |  | 
						
							| 22 | 4 9 21 | 3eqtr3d |  |