Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 12 2/4
320 - 504 is -24720.
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Related: 6/20-50/4 3/40-50/4 3/20-50/8 9/20-50/4 3/60-50/4 3/20-50/12 15/20-50/4 3/20-50/20 21/20-50/4 3/20-50/28
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