Solutions by everydaycalculation.com
1st number: 3/21, 2nd number: 1 4/21
321 + 2521 is 43.
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Related: 6/21+25/21 3/21+50/21 3/42+25/21 3/21+25/42 9/21+25/21 3/21+75/21 3/63+25/21 3/21+25/63 15/21+25/21
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