Solutions by everydaycalculation.com
1215 - 615 is 25.
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Related: 24/15-6/15 12/15-12/15 12/30-6/15 12/15-6/30 36/15-6/15 12/15-18/15 12/45-6/15 12/15-6/45 60/15-6/15 12/15-30/15 12/75-6/15 12/15-6/75 84/15-6/15 12/15-42/15
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