Solutions by everydaycalculation.com
1st number: 1 4/12, 2nd number: 6/9
1612 + 69 is 21.
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Related: 32/12+6/9 16/12+12/9 16/24+6/9 16/12+6/18 48/12+6/9 16/12+18/9 16/36+6/9 16/12+6/27 80/12+6/9 16/12+30/9 16/60+6/9 16/12+6/45 16/12+42/9 16/84+6/9 16/12+6/63
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