3/10 + 4/10 =, 1/10, 7/10, 7/0, 10/15 + 4/15 =, 14/15, 6/15, 14/30, 7/20 + 1/20, 6/20, 8/20, 8/40, 3/17 + 9/17 =, 12/34, 6/17, 12/17, 4/13 + 7/13 =, 3/13, 11/13, 11/26, 5/19 + 4/19 =, 9/29, 1/19, 9/19

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