Solutions by everydaycalculation.com
1st number: 18/28, 2nd number: 1 2/12
1828 - 1412 is -1121.
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Related: 36/28-14/12 18/28-28/12 18/56-14/12 18/28-14/24 54/28-14/12 18/28-42/12 18/84-14/12 18/28-14/36 90/28-14/12 18/28-70/12 18/28-14/60 18/28-98/12 18/28-14/84
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