Solutions by everydaycalculation.com
1st number: 3 9/18, 2nd number: 4 9/18
6318 + 8118 is 81.
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Related: 63/36+81/18 63/18+81/36 63/54+81/18 63/18+81/54 63/90+81/18 63/18+81/90
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