Solutions by everydaycalculation.com
1st number: 1 19/21, 2nd number: 1 7/9
4021 - 169 is 863.
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Related: 80/21-16/9 40/21-32/9 40/42-16/9 40/21-16/18 40/21-48/9 40/63-16/9 40/21-16/27 40/21-80/9 40/21-16/45 40/21-16/63
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