Solutions by everydaycalculation.com
1st number: 1 6/15, 2nd number: 9/15
2115 - 915 is 45.
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Related: 42/15-9/15 21/15-18/15 21/30-9/15 21/15-9/30 63/15-9/15 21/15-27/15 21/45-9/15 21/15-9/45 21/15-45/15 21/75-9/15 21/15-9/75 21/15-63/15
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