Solutions by everydaycalculation.com
1st number: 1 4/12, 2nd number: 12/18
1612 + 1218 is 21.
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Related: 32/12+12/18 16/12+24/18 16/24+12/18 16/12+12/36 48/12+12/18 16/12+36/18 16/36+12/18 16/12+12/54 80/12+12/18 16/12+60/18 16/60+12/18 16/12+12/90 16/12+84/18 16/84+12/18
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