1,12/5*5/4 2,5/7*7/10 3,7/3*9/14 4,7/8+14/3 5,9/5-3/1 6,5/4+30/7 7,6/7-36/7 8,9/5-3/8 9,6/7+10/7 10,14/9-7/2 11,5/3+15/8