Solutions by everydaycalculation.com
1542 - 942 is 17.
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Related: 30/42-9/42 15/42-18/42 15/84-9/42 15/42-9/84 45/42-9/42 15/42-27/42 75/42-9/42 15/42-45/42 15/42-63/42
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