Solutions by everydaycalculation.com
1st number: 2/3, 2nd number: 4 6/21
23 - 9021 is -7621.
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Related: 4/3-90/21 2/6-90/21 2/3-90/42 6/3-90/21 2/9-90/21 2/3-90/63 10/3-90/21 2/15-90/21 14/3-90/21 2/21-90/21
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