adding fractions
2/3+1/5
11/12
3/4-4/13
23/52
2 1/5 + 1 3/4
3 19/20
5/4
1 1/4
5 2/1
11/2
3/4+7/12
1 1/3
2/5-1/4
3/10
1 3/4 + 2 3/8
4 1/8
14/3
4 2/3
5 32/69
377/69
6/7+5/21
1 2/21
9/10-4/9
41/90
9 3/21+12 49/56
22 1/56
32/1
32
4 0/2
4/1
3/5+11/20
1 3/20
5/14-1/3
1/42
1 1/4 + 2 3/4
4
420/69
6 2/23
4 21/29
137/29
2/9+13/45
23/45
1/3-1/5
2/15
3 2/12 + 2 3/12
5 5/12
5/3
1 2/3
6 1000/20123
121738/20123