Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 3 15/20
310 - 7520 is -6920.
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Related: 6/10-75/20 3/20-75/20 3/10-75/40 9/10-75/20 3/30-75/20 3/10-75/60 15/10-75/20 3/50-75/20 21/10-75/20 3/70-75/20
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