Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 2 5/20
310 - 4520 is -3920.
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Related: 6/10-45/20 3/10-90/20 3/20-45/20 3/10-45/40 9/10-45/20 3/30-45/20 3/10-45/60 15/10-45/20 3/50-45/20 21/10-45/20 3/70-45/20
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