Solutions by everydaycalculation.com
1st number: 3 1/5, 2nd number: 5 5/7
165 - 407 is -8835.
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Related: 32/5-40/7 16/5-80/7 16/10-40/7 16/5-40/14 48/5-40/7 16/15-40/7 16/5-40/21 80/5-40/7 16/25-40/7 16/5-40/35 16/35-40/7 16/5-40/49
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