Solutions by everydaycalculation.com
1st number: 1/2, 2nd number: 7 1/7
12 - 507 is -9314.
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Related: 1/4-50/7 1/2-50/14 3/2-50/7 1/6-50/7 1/2-50/21 5/2-50/7 1/10-50/7 1/2-50/35 7/2-50/7 1/14-50/7 1/2-50/49
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