Solutions by everydaycalculation.com
1st number: 1/2, 2nd number: 6 3/7
12 - 457 is -8314.
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Related: 1/2-90/7 1/4-45/7 1/2-45/14 3/2-45/7 1/6-45/7 1/2-45/21 5/2-45/7 1/10-45/7 1/2-45/35 7/2-45/7 1/14-45/7 1/2-45/49
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