Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 1 3/15
1510 - 1815 is 310.
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Related: 30/10-18/15 15/10-36/15 15/20-18/15 15/10-18/30 45/10-18/15 15/10-54/15 15/30-18/15 15/10-18/45 75/10-18/15 15/10-90/15 15/50-18/15 15/10-18/75 15/70-18/15
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