Solutions by everydaycalculation.com
1st number: 7/8, 2nd number: 7 1/7
78 - 507 is -35156.
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Related: 14/8-50/7 7/16-50/7 7/8-50/14 21/8-50/7 7/24-50/7 7/8-50/21 35/8-50/7 7/40-50/7 7/8-50/35 49/8-50/7 7/56-50/7 7/8-50/49
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