1) 7.3/4-(4.5/6-3.1/2)+1.2/3=31/4-4/6+5/3=93-8+30/12=115/12=9.7/122) 9.2/5-(8.1/3-7.1/4+5.1/6)=47/5-(100-87+62/12)=47/5-75/12=564-375/60=3.3/203) (6.5/8-1/2)-(5.3/4-2.1/6)+(9.5/8-7.1/3)=49/8-43/12+55/24=147-86+55=4.4/54) (5.1/30-2.3/5-2/15+6)-(7-6.11/12+1/4)=75/30-(-80/12)=9.1/6