Solutions by everydaycalculation.com
1st number: 1/70, 2nd number: 2 1/7
170 - 157 is -14970.
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Related: 2/70-15/7 1/70-30/7 1/70-15/14 3/70-15/7 1/70-45/7 1/70-15/21 5/70-15/7 1/70-75/7 1/70-15/35 7/70-15/7 1/70-15/49
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