Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 1 1/7
320 - 87 is -139140.
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Related: 6/20-8/7 3/20-16/7 3/40-8/7 3/20-8/14 9/20-8/7 3/20-24/7 3/60-8/7 3/20-8/21 15/20-8/7 3/20-40/7 3/20-8/35 21/20-8/7 3/20-56/7 3/20-8/49
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