Solutions by everydaycalculation.com
1st number: 15/21, 2nd number: 3 3/9
1521 is smaller than 309
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Related: 30/21 and 30/9 15/21 and 60/9 15/42 and 30/9 15/21 and 30/18 45/21 and 30/9 15/21 and 90/9 15/63 and 30/9 15/21 and 30/27 75/21 and 30/9 15/21 and 30/45 15/21 and 30/63
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