1)
1
1 11/14 - 4 5/7 =1 11/14 - 4 10/14 =-2 13/14
2
-1 5/6 + 3, 2/9 = -1 15/18 + 3 4/18 = 1 7/18
3
-2 13/14*4 2/3=-41/14*14/3=-41/3=-13 2/3
4
1 7/18*9/25=25/18*9/25=1/2
5
-13 2/3-1/2=-41/3-1/2=-82/6-3/6=-85/6=-14 1/6
6
11 1/3 : (-14 1/6)=34/3 : (-85/6)=34/3 * (-6/85)=-(2*2/5)=-4/5
2)
1
-10 1/2:1 1/2=-21/2:3/2=-21/2*2/3=-7
2
1 1/4-1 23/52=5/4-75/52=65/52-75/52=-10/52=-5/26
3
-7*3/14=-3/2=-1 1/2
4
15 :3 3/4=15:15/4=15*4/15=4
5
-1 1/2:-5/26=3/2*26/5=39/5=7 4/5
6
4-7 4/5=-3 4/5