Solutions by everydaycalculation.com
1st number: 16/21, 2nd number: 2 14/21
1621 - 5621 is -4021.
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Related: 32/21-56/21 16/42-56/21 16/21-56/42 48/21-56/21 16/63-56/21 16/21-56/63 80/21-56/21
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