Solutions by everydaycalculation.com
1st number: 20/21, 2nd number: 1 5/9
2021 - 149 is -3863.
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Related: 40/21-14/9 20/21-28/9 20/42-14/9 20/21-14/18 60/21-14/9 20/21-42/9 20/63-14/9 20/21-14/27 20/21-70/9 20/21-14/45 20/21-98/9 20/21-14/63
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