Solutions by everydaycalculation.com
1st number: 3 9/12, 2nd number: 4/12
4512 + 412 is 4912.
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Related: 90/12+4/12 45/12+8/12 45/24+4/12 45/12+4/24 45/36+4/12 45/12+4/36 45/12+20/12 45/60+4/12 45/12+4/60 45/12+28/12 45/84+4/12 45/12+4/84
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