Solutions by everydaycalculation.com
1st number: 2/3, 2nd number: 3 9/12
23 - 4512 is -3712.
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Related: 4/3-45/12 2/3-90/12 2/6-45/12 2/3-45/24 6/3-45/12 2/9-45/12 2/3-45/36 10/3-45/12 2/15-45/12 2/3-45/60 14/3-45/12 2/21-45/12 2/3-45/84
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