Solutions by everydaycalculation.com
1424 - 1824 is -16.
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Related: 28/24-18/24 14/24-36/24 14/48-18/24 14/24-18/48 42/24-18/24 14/24-54/24 14/72-18/24 14/24-18/72 70/24-18/24 14/24-90/24 98/24-18/24
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