3/7 + 2/7 = , 5/7 , 6/7, 1, 2/5, 5/9 + 2/9 =, 8/9 , 7/9, 6/8, 3/9, 7/12 - 2/6 =, 1/4, 3/6, 1/2, 5/12, , 3, , , 3/5, , 9/10, 2/8, 5, , 15/5 + 5/2 = ___________ . Berikan jawapan dalam pecahan campur, , 55/10, , 5/10.

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