Solutions by everydaycalculation.com
1st number: 1 5/20, 2nd number: 3 15/20
2520 - 7520 is -52.
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Related: 50/20-75/20 25/40-75/20 25/20-75/40 75/20-75/20 25/60-75/20 25/20-75/60
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