Solutions by everydaycalculation.com
1st number: 5/21, 2nd number: 12 3/6
521 - 756 is -51542.
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Related: 10/21-75/6 5/42-75/6 5/21-75/12 15/21-75/6 5/63-75/6 5/21-75/18 25/21-75/6 5/21-75/30 35/21-75/6 5/21-75/42
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