Solutions by everydaycalculation.com
1st number: 1/20, 2nd number: 1 1/15
120 - 1615 is -6160.
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Related: 2/20-16/15 1/20-32/15 1/40-16/15 1/20-16/30 3/20-16/15 1/20-48/15 1/60-16/15 1/20-16/45 5/20-16/15 1/20-80/15 1/20-16/75 7/20-16/15
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