Solutions by everydaycalculation.com
1st number: 16/42, 2nd number: 1 9/12
1642 - 2112 is -11584.
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Related: 32/42-21/12 16/42-42/12 16/84-21/12 16/42-21/24 48/42-21/12 16/42-63/12 16/42-21/36 80/42-21/12 16/42-21/60 16/42-21/84
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