Solutions by everydaycalculation.com
1st number: 1/3, 2nd number: 2 1/7
13 - 157 is -3821.
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Related: 2/3-15/7 1/3-30/7 1/6-15/7 1/3-15/14 1/3-45/7 1/9-15/7 1/3-15/21 5/3-15/7 1/3-75/7 1/15-15/7 1/3-15/35 7/3-15/7 1/21-15/7 1/3-15/49
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