7 1/2 + 2 1/4 =
6 1/2 + 2 1/4 =
4/3 - 9/10 =
10/9 - 5/6 =
6 1/2 + 2 1/4 =
4/3 - 9/10 =
10/9 - 5/6 =
maluoliguer
7/2+9/4=14/4+9/4=23/4 =5 3/4 4/3-9/10=40/30-27/30=13/30 10/9-5/6=60/54-45/54=15/54
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