Solutions by everydaycalculation.com
1st number: 1 3/21, 2nd number: 10/21
2421 - 1021 is 23.
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Related: 48/21-10/21 24/21-20/21 24/42-10/21 24/21-10/42 72/21-10/21 24/21-30/21 24/63-10/21 24/21-10/63 24/21-50/21 24/21-70/21
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