Solutions by everydaycalculation.com
1st number: 1 2/3, 2nd number: 9 1/7
53 - 647 is -15721.
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Related: 10/3-64/7 5/6-64/7 5/3-64/14 15/3-64/7 5/9-64/7 5/3-64/21 25/3-64/7 5/15-64/7 5/3-64/35 35/3-64/7 5/21-64/7 5/3-64/49
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