(X-1 15_16) +73_16=8 1_16 +4 9_16

(х-1 15/16)+7 3/16=8 1/16+4 9/16 (х-1 15/16)+7 3/16=12 10/16 (х-1 15/16)=12 10/16-7 3/16 (х-1 15/16)=5 7/16 х-1 15/16=5 7/16 х=5 7/16+1 15/16 х=6 22/16 х=7 6/16 х=7 

Х-1 15\16=8 1\16+4 9\16-7 3\16             
х-1 15\16=5 7\16
х=5 7\16+1 15\16
х= 6 22\16
х=7 6\16
х=7 3\8