Solutions by everydaycalculation.com
1518 - 718 is 49.
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Related: 30/18-7/18 15/18-14/18 15/36-7/18 15/18-7/36 45/18-7/18 15/18-21/18 15/54-7/18 15/18-7/54 75/18-7/18 15/18-35/18 15/90-7/18 15/18-7/90 15/18-49/18
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