Solutions by everydaycalculation.com
1st number: 12/21, 2nd number: 3 17/21
1221 - 8021 is -6821.
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Related: 24/21-80/21 12/42-80/21 12/21-80/42 36/21-80/21 12/63-80/21 12/21-80/63 60/21-80/21 84/21-80/21
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