Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 6 9/12
1021 - 8112 is -52784.
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Related: 20/21-81/12 10/42-81/12 10/21-81/24 30/21-81/12 10/63-81/12 10/21-81/36 50/21-81/12 10/21-81/60 70/21-81/12 10/21-81/84
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