Solutions by everydaycalculation.com
1st number: 4/60, 2nd number: 1 3/12
460 - 1512 is -7160.
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Related: 8/60-15/12 4/60-30/12 4/60-15/24 12/60-15/12 4/60-45/12 4/60-15/36 20/60-15/12 4/60-75/12 4/60-15/60 28/60-15/12 4/60-15/84
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