d 9/25+7/25 25/36+11/36 29/33+13/66 5/9+7/18 9/10+13/25 7/15+7/20 5/9+2/7 5/9-7/18 6/5/2.4 2/[13/10] 6/9+1/9= 7/9-4/9= 6/9-1/4= 3/6+3/7= 5/8-1/2= 8/9+2/3= 13/15-11/15= 2) 5/13-1/13= 3) 2/11+5/11= 4) 1...