Solutions by everydaycalculation.com
1st number: 1/3, 2nd number: 2 6/21
13 - 4821 is -4121.
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Related: 2/3-48/21 1/3-96/21 1/6-48/21 1/3-48/42 1/9-48/21 1/3-48/63 5/3-48/21 1/15-48/21 7/3-48/21 1/21-48/21
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