1/2+3/8= 4/8+3/8= 7/8
2/7+5/14=4/14+5/14=9/14
3/5+4/15= 9/15+4/15=13/15
1/8+3/16= 2/16+3/16=5/16
17/33-5/22= 19/66
27/76-0= 27/76
9/20+5/8= 1 3/40
2/7+13/28= 3/4
5/13-14/39= 1/39
1/2+3/8= 4/8+3/8= 7/8
2/7+5/14=4/14+5/14=9/14
3/5+4/15= 9/15+4/15=13/15
1/8+3/16= 2/16+3/16=5/16
17/33-5/22= 19/66
27/76-0= 27/76
9/20+5/8= 1 3/40
2/7+13/28= 3/4
5/13-14/39= 1/39