1/8 + 5/8=?
6/8
8/9
9/8
15/20+12/20=
27/20
2/3
3/2
6/18+ 11/18=
17/18
11/8
8/11
8/25+ 12/25=?
20/25
14/15
15/14
120/200 + 80/200=
200/200
456/1000
1000/456
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