Solutions by everydaycalculation.com
1st number: 21/24, 2nd number: 2 4/6
2124 - 166 is -4324.
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Related: 42/24-16/6 21/24-32/6 21/48-16/6 21/24-16/12 63/24-16/6 21/24-48/6 21/72-16/6 21/24-16/18 21/24-80/6 21/24-16/30 21/24-16/42
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