Solutions by everydaycalculation.com
1st number: 2 2/3, 2nd number: 3 18/21
83 - 8121 is -2521.
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Related: 16/3-81/21 8/6-81/21 8/3-81/42 24/3-81/21 8/9-81/21 8/3-81/63 40/3-81/21 8/15-81/21 56/3-81/21 8/21-81/21
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