Solutions by everydaycalculation.com
1st number: 1 2/10, 2nd number: 10/15
1210 - 1015 is 815.
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Related: 24/10-10/15 12/10-20/15 12/20-10/15 12/10-10/30 36/10-10/15 12/10-30/15 12/30-10/15 12/10-10/45 60/10-10/15 12/10-50/15 12/50-10/15 12/10-10/75 84/10-10/15 12/10-70/15 12/70-10/15
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