Solutions by everydaycalculation.com
1st number: 1/3, 2nd number: 1 15/21
13 - 3621 is -2921.
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Related: 2/3-36/21 1/3-72/21 1/6-36/21 1/3-36/42 1/9-36/21 1/3-36/63 5/3-36/21 1/15-36/21 7/3-36/21 1/21-36/21
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