Solutions by everydaycalculation.com
1st number: 2 3/21, 2nd number: 2 3/21
4521 - 4521 is 01.
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Related: 90/21-45/21 45/21-90/21 45/42-45/21 45/21-45/42 45/63-45/21 45/21-45/63
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