Solutions by everydaycalculation.com
1012 - 612 is 13.
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Related: 20/12-6/12 10/24-6/12 10/12-6/24 30/12-6/12 10/12-18/12 10/36-6/12 10/12-6/36 50/12-6/12 10/12-30/12 10/60-6/12 10/12-6/60 70/12-6/12 10/12-42/12 10/84-6/12 10/12-6/84
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