Solutions by everydaycalculation.com
1st number: 7/21, 2nd number: 3 3/7
721 - 247 is -6521.
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Related: 14/21-24/7 7/21-48/7 7/42-24/7 7/21-24/14 7/21-72/7 7/63-24/7 7/21-24/21 35/21-24/7 7/21-24/35 49/21-24/7 7/21-24/49
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