Solutions by everydaycalculation.com
1st number: 2/3, 2nd number: 1 19/21
23 - 4021 is -2621.
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Related: 4/3-40/21 2/3-80/21 2/6-40/21 2/3-40/42 6/3-40/21 2/9-40/21 2/3-40/63 10/3-40/21 2/15-40/21 14/3-40/21 2/21-40/21
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