Solutions by everydaycalculation.com
1st number: 2/21, 2nd number: 6 6/7
221 - 487 is -14221.
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Related: 4/21-48/7 2/21-96/7 2/42-48/7 2/21-48/14 6/21-48/7 2/63-48/7 2/21-48/21 10/21-48/7 2/21-48/35 14/21-48/7 2/21-48/49
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