Solutions by everydaycalculation.com
1st number: 3 6/12, 2nd number: 9/12
4212 + 912 is 174.
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Related: 84/12+9/12 42/12+18/12 42/24+9/12 42/12+9/24 42/12+27/12 42/36+9/12 42/12+9/36 42/12+45/12 42/60+9/12 42/12+9/60 42/12+63/12 42/84+9/12 42/12+9/84
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