Solutions by everydaycalculation.com
1st number: 1/2, 2nd number: 1 4/21
12 - 2521 is -2942.
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Related: 1/2-50/21 1/4-25/21 1/2-25/42 3/2-25/21 1/2-75/21 1/6-25/21 1/2-25/63 5/2-25/21 1/10-25/21 7/2-25/21 1/14-25/21
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