Solutions by everydaycalculation.com
1st number: 8/21, 2nd number: 1 1/7
821 + 87 is 3221.
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Related: 16/21+8/7 8/21+16/7 8/42+8/7 8/21+8/14 24/21+8/7 8/21+24/7 8/63+8/7 8/21+8/21 40/21+8/7 8/21+40/7 8/21+8/35 56/21+8/7 8/21+56/7 8/21+8/49
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