Solutions by everydaycalculation.com
1st number: 2 2/4, 2nd number: 5/10
104 - 510 is 21.
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Related: 20/4-5/10 10/8-5/10 10/4-5/20 30/4-5/10 10/4-15/10 10/12-5/10 10/4-5/30 50/4-5/10 10/4-25/10 10/20-5/10 10/4-5/50 70/4-5/10 10/4-35/10 10/28-5/10 10/4-5/70
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