Solutions by everydaycalculation.com
1st number: 1 6/10, 2nd number: 9/15
1610 - 915 is 11.
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Related: 32/10-9/15 16/10-18/15 16/20-9/15 16/10-9/30 48/10-9/15 16/10-27/15 16/30-9/15 16/10-9/45 80/10-9/15 16/10-45/15 16/50-9/15 16/10-9/75 16/10-63/15 16/70-9/15
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