Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 4 4/7
320 - 327 is -619140.
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Related: 6/20-32/7 3/20-64/7 3/40-32/7 3/20-32/14 9/20-32/7 3/20-96/7 3/60-32/7 3/20-32/21 15/20-32/7 3/20-32/35 21/20-32/7 3/20-32/49
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