Adding with like denominators
1/2+2/2
3/2, or 1 1/2
3/4 - 1/4
2/4, or 1/2
1/3 + 1/4
7/12
3/4 - 1/2
1/4
2 2/3 + 1 1/2
26/6, or 13/3
5/6 + 7/6
12/6, or 2
5/7 - 3/7
2/7
2/5 + 6/7
44/35, or 1 9/35
5/6 - 2/3
1/6
5 6/7 - 4 5/6
43/42
18/20+14/20
32/20
13/17 - 11/17
2/17
18/20 + 15/100
105/100
6/12 - 24/48
0
12 9/10 - 8 7/6
224/60, or 112/30, or 56/15
22/43+17/43
39/43
22/67 - 9/67
13/67
12/9 + 1/6
81/54, or 1 1/2
22/44 - 12/48
1/4
25 8/9 - 17 2/3
282/27, or 94/9
37/5 + 58/5
95/5
483/987 - 231/987
252/987
12/36 + 6/24
7/12, or 504/864
27/3 - 1/9
80/9, or 240/27
543 1/2 - 3/4
2171/4