Solutions by everydaycalculation.com
1st number: 2 5/20, 2nd number: 2 7/10
4520 - 2710 is -920.
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Related: 90/20-27/10 45/20-54/10 45/40-27/10 45/20-27/20 45/20-81/10 45/60-27/10 45/20-27/30 45/20-27/50 45/20-27/70
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