Solutions by everydaycalculation.com
1st number: 14/21, 2nd number: 1 19/21
1421 - 4021 is -2621.
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Related: 28/21-40/21 14/21-80/21 14/42-40/21 14/21-40/42 42/21-40/21 14/63-40/21 14/21-40/63 70/21-40/21 98/21-40/21
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