Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 10 2/7
310 - 727 is -69970.
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Related: 6/10-72/7 3/20-72/7 3/10-72/14 9/10-72/7 3/30-72/7 3/10-72/21 15/10-72/7 3/50-72/7 3/10-72/35 21/10-72/7 3/70-72/7 3/10-72/49
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