I) 1) 4 7/9 -2 5/6=4 14/18 -2 15/18= 3 32/18 - 2 15/18 =1 17/18
2) 1 17/18 : 1 5/9 =35/18 * 9/14=5/4
3)4/9*6 3/16 = 4/9 * 99/16=11/4
4) 5/4 + 11/4 = 16/4=4
II) 1)1 8/12 +2 9/12= 3 17/12=4 5/12
2)4 5/12 : 8 5/6 = 53/12 : 53/6 = 53/12 * 6/53= 1/2
3) 1 5/12 - 4/9= 1 15/36 - 16/36= 51/36-16/36=35/36
4) 1/2 * 35/36 = 35/72
5) 35/72 : 2 1/3= 35/72 * 3/7 =5/24
6)5/24 * 2= 5/12
III) 1) 3 2/5 - 1 3/4 = 3 8/20 - 1 15/20 = 2 28/20 - 1 15/20 =1 13/20
2)1 13/20 * 1 2/3 =33/20 * 5/3= 11/4=2 3/4
3)2 1/6 +2 3/4 =2 2/12 + 2 9/12 = 4 11/12
4)3/14 : 2 4/7= 3/14 : 18/7 = 3/14 * 7/18=1/12
5) 4 11/12+ 1/12=4 12/12= 5
IV)1) 2 4/9 :2 = 22/9 * 1/2=11/9
2) 1 7/36 * 4= 43/36*4/1=43/9
3) 11/9 + 43/9 = 54/9 = 6
4) 6 * 2/3= 4
5) 2 1/6 - 1 2/3= 2 1/6 - 1 4/6 = 1 7/6 - 1 4/6 =3/6=1/2
6) 4 : 1/2= 8