Solutions by everydaycalculation.com
1st number: 15/20, 2nd number: 3 0/20
1520 - 6020 is -94.
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Related: 30/20-60/20 15/40-60/20 15/20-60/40 45/20-60/20 15/60-60/20 75/20-60/20
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