Solutions by everydaycalculation.com
1st number: 16/21, 2nd number: 1 19/21
1621 + 4021 is 83.
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Related: 32/21+40/21 16/21+80/21 16/42+40/21 16/21+40/42 48/21+40/21 16/63+40/21 16/21+40/63 80/21+40/21
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