Solutions by everydaycalculation.com
1st number: 2/21, 2nd number: 4 2/7
221 - 307 is -8821.
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Related: 4/21-30/7 2/21-60/7 2/42-30/7 2/21-30/14 6/21-30/7 2/21-90/7 2/63-30/7 2/21-30/21 10/21-30/7 2/21-30/35 14/21-30/7 2/21-30/49
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