Solutions by everydaycalculation.com
1st number: 14/21, 2nd number: 2 14/21
1421 - 5621 is -21.
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Related: 28/21-56/21 14/42-56/21 14/21-56/42 42/21-56/21 14/63-56/21 14/21-56/63 70/21-56/21 98/21-56/21
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