Solutions by everydaycalculation.com
1st number: 7/12, 2nd number: 1 1/7
712 - 87 is -4784.
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Related: 14/12-8/7 7/12-16/7 7/24-8/7 7/12-8/14 21/12-8/7 7/12-24/7 7/36-8/7 7/12-8/21 35/12-8/7 7/12-40/7 7/60-8/7 7/12-8/35 49/12-8/7 7/12-56/7 7/84-8/7 7/12-8/49
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