Solutions by everydaycalculation.com
1st number: 1 1/20, 2nd number: 1 5/15
2120 - 2015 is -1760.
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Related: 42/20-20/15 21/20-40/15 21/40-20/15 21/20-20/30 63/20-20/15 21/20-60/15 21/60-20/15 21/20-20/45 21/20-20/75
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