1) 2/5 + 3/5 = 5/5 = 12) 3/7 - 2/7 = 1/73) 7/20 - 3/20 = 4/20 = 1/54) 1/9 + 5/9 = 6/9 = 2/35) 6/23 - 2/23 = 4/236) 3/20 + 7/20 = 10/20 = 1/27) 13/29 - 2/29 = 11/298) 11/51 + 13/51 = 24/51 = 8/179) 17/72 - 13/71 = 4/7110) 32/55 + 23/55 = 55/55 = 111) 5/33 + 6/33 = 11/3312) 13/48 - 11/48 = 2/48 = 1/24
1) 2/5 + 3/5 = 5/5 = 1
2) 3/7 - 2/7 = 1/7
3) 7/20 - 3/20 = 4/20 = 1/5
4) 1/9 + 5/9 = 6/9 = 2/3
5) 6/23 - 2/23 = 4/23
6) 3/20 + 7/20 = 10/20 = 1/2
7) 13/29 - 2/29 = 11/29
8) 11/51 + 13/51 = 24/51 = 8/17
9) 17/72 - 13/71 = 4/71
10) 32/55 + 23/55 = 55/55 = 1
11) 5/33 + 6/33 = 11/33
12) 13/48 - 11/48 = 2/48 = 1/24