simplify
40/20
2
4 9/7
37/7
20/7
2 6/7
2/5+2/4
9/10
(2/9+2/9)x4
16/9= 1 7/9
4/8
1/2
.
4 2/7
30/7
40/7
5 5/7
2/3+2/6
1
15
50/25
2
5 6/7
41/7
63/8
7 7/8
2/5+2/7=
24/35
(2/2+1)+1
3
20/40
1/2
10 10/7
80/7
99/8
12 3/8
1/2+1/3
5/6
(4/2x4/2)+2
6
29/77
3
40 2/40
162/40
120/9
13 3/9
2/4+2/3
14/12=1 2/12=1 1/6
z/7+7=8
7