Solutions by everydaycalculation.com
1st number: 10 1/2, 2nd number: 1/12
212 - 112 is 12512.
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Related: 42/2-1/12 21/2-2/12 21/4-1/12 21/2-1/24 63/2-1/12 21/2-3/12 21/6-1/12 21/2-1/36 21/2-5/12 21/10-1/12 21/2-1/60 21/2-7/12 21/14-1/12 21/2-1/84
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