Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 7 1/7
310 - 507 is -47970.
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Related: 6/10-50/7 3/20-50/7 3/10-50/14 9/10-50/7 3/30-50/7 3/10-50/21 15/10-50/7 3/50-50/7 3/10-50/35 21/10-50/7 3/70-50/7 3/10-50/49
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