Solutions by everydaycalculation.com
1st number: 1 1/3, 2nd number: 4/21
43 + 421 is 3221.
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Related: 8/3+4/21 4/3+8/21 4/6+4/21 4/3+4/42 12/3+4/21 4/3+12/21 4/9+4/21 4/3+4/63 20/3+4/21 4/3+20/21 4/15+4/21 28/3+4/21 4/3+28/21 4/21+4/21
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