Solutions by everydaycalculation.com
1st number: 5 0/3, 2nd number: 5/21
153 - 521 is 10021.
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Related: 30/3-5/21 15/3-10/21 15/6-5/21 15/3-5/42 45/3-5/21 15/3-15/21 15/9-5/21 15/3-5/63 75/3-5/21 15/3-25/21 15/3-35/21 15/21-5/21
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