решить все эти задания очень нужно

1 - 6/21 = 21/21 -6/21= 15/21 =5/7
2 - 8/30=30/30-8/30= 22/30=11/15
3 16/30+ 14/30= 3 30/30=4
1 1/8 - 2/8 = 9/8-2/8=7/8
3 6/8 - 2 7/8= 2 14/8 - 2 7/8= 7/8
6 11/12 + 5 10/12= 11 21/12= 12 9/12= 12 3/4
16/20 +17/20= 33/20 =1 13/20
1 8/10+ 2 6/10 =3 14/10 = 4 4/10=4 2/5
3 - 5/16 = 2 16/16 - 5/16= 2 11/16
4 - 1 8/12= 3 12/12 - 1 8/12= 2 4/12 = 2 1/3
4 1/3 -2 2/3= 3 4/3 - 2 2/3 = 1 2/3
7 5/16 - 4 12/16= 6 21/16 - 4 12/16= 2 9/16

3 1/2 = 7/2
8 4/8= 68/8
8 4/15 = 124/15
6 7/10=67/10
5 1/7=36/7
6 1/3=19/3

11/3= 3 2/3
17/6 =2 5/6
85/2= 42 1/2
24/5= 4 4/5

1/6 >1/8
3/10 < 3/5
16/20< 17/20
18/41 > 4/41