Solutions by everydaycalculation.com
1st number: 5 1/3, 2nd number: 6/21
163 + 621 is 11821.
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Related: 32/3+6/21 16/3+12/21 16/6+6/21 16/3+6/42 48/3+6/21 16/3+18/21 16/9+6/21 16/3+6/63 80/3+6/21 16/3+30/21 16/15+6/21 16/3+42/21 16/21+6/21
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