Solutions by everydaycalculation.com
1st number: 3 1/2, 2nd number: 7 1/7
72 - 507 is -5114.
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Related: 14/2-50/7 7/4-50/7 7/2-50/14 21/2-50/7 7/6-50/7 7/2-50/21 35/2-50/7 7/10-50/7 7/2-50/35 49/2-50/7 7/14-50/7 7/2-50/49
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