выполни действия
17/81-1/9; 9/14-35/98; 3/5+16/65; 7/91+5/13; 9/54+5/6; 4/7-27/63

1. =17/81-9/81=8/812. =63/98-35/98=28/98=2/73. =39/65+16/65=55/65=11/134. =7/91+35/91=42/91=6/135. =9/54+45/54=54/54=16. =28/63-27/63=1/63