Solutions by everydaycalculation.com
1st number: 21/24, 2nd number: 1 18/24
2124 - 4224 is -78.
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Related: 42/24-42/24 21/24-84/24 21/48-42/24 21/24-42/48 63/24-42/24 21/72-42/24 21/24-42/72
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