Solutions by everydaycalculation.com
1st number: 1 2/10, 2nd number: 1 3/15
1210 - 1815 is 01.
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Related: 24/10-18/15 12/10-36/15 12/20-18/15 12/10-18/30 36/10-18/15 12/10-54/15 12/30-18/15 12/10-18/45 60/10-18/15 12/10-90/15 12/50-18/15 12/10-18/75 84/10-18/15 12/70-18/15
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