Solutions by everydaycalculation.com
1st number: 7/30, 2nd number: 3 9/12
730 - 4512 is -21160.
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Related: 14/30-45/12 7/30-90/12 7/60-45/12 7/30-45/24 21/30-45/12 7/90-45/12 7/30-45/36 35/30-45/12 7/30-45/60 49/30-45/12 7/30-45/84
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