Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 1 19/21
1512 - 4021 is -5584.
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Related: 30/12-40/21 15/12-80/21 15/24-40/21 15/12-40/42 45/12-40/21 15/36-40/21 15/12-40/63 75/12-40/21 15/60-40/21 15/84-40/21
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