Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 2 0/7
123 - 147 is 21.
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Related: 24/3-14/7 12/3-28/7 12/6-14/7 36/3-14/7 12/3-42/7 12/9-14/7 12/3-14/21 60/3-14/7 12/3-70/7 12/15-14/7 12/3-14/35 84/3-14/7 12/3-98/7 12/21-14/7 12/3-14/49
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