Easy
2/4+1/4
3/4
15/30+10/30
25/30
200/300+50/300
250/300
29/45+6/45
25/45
57/230+92/230
149/230
3/6+2/6
5/6
5/9+4/9
1 or 9/9
47/50+2/50
49/50
6/30+19/30
25/30
50/100+51/100
1 1/100
4/10+5/10
9/10
6/8+1/6
7/8
59/100+32/100
91/100
36/50+9/50
45/50
11/10+5/10
1 6/10
8/20+2/20
10/20 or 1/2
20/40+13/40
33/40
91/200+9/200
100/200 or 1/2
52/90+31/90
83/90
10/10+10/10
2
6/20+8/20
14/20
30/50+20/50
1 or 50/50
6/80+13/80
19/80
77/100
20/20+20/20
2