Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 1 9/12
1021 - 2112 is -10784.
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Related: 20/21-21/12 10/21-42/12 10/42-21/12 10/21-21/24 30/21-21/12 10/21-63/12 10/63-21/12 10/21-21/36 50/21-21/12 10/21-21/60 70/21-21/12 10/21-21/84
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