Solutions by everydaycalculation.com
1st number: 1 1/20, 2nd number: 1/5
2120 - 15 is 1720.
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Related: 42/20-1/5 21/20-2/5 21/40-1/5 21/20-1/10 63/20-1/5 21/20-3/5 21/60-1/5 21/20-1/15 21/20-1/25 21/20-7/5 21/20-1/35
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