Solutions by everydaycalculation.com
2124 - 1524 is 14.
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Related: 42/24-15/24 21/24-30/24 21/48-15/24 21/24-15/48 63/24-15/24 21/24-45/24 21/72-15/24 21/24-15/72 21/24-75/24
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