Solutions by everydaycalculation.com
1st number: 16/21, 2nd number: 3 3/6
1621 - 216 is -11542.
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Related: 32/21-21/6 16/21-42/6 16/42-21/6 16/21-21/12 48/21-21/6 16/21-63/6 16/63-21/6 16/21-21/18 80/21-21/6 16/21-21/30 16/21-21/42
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