Solutions by everydaycalculation.com
1st number: 3 9/12, 2nd number: 14/30
4512 - 1430 is 19760.
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Related: 90/12-14/30 45/12-28/30 45/24-14/30 45/12-14/60 45/12-42/30 45/36-14/30 45/12-14/90 45/12-70/30 45/60-14/30 45/12-98/30 45/84-14/30
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