Solutions by everydaycalculation.com
1st number: 1 3/9, 2nd number: 10/15
129 + 1015 is 21.
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Related: 24/9+10/15 12/9+20/15 12/18+10/15 12/9+10/30 36/9+10/15 12/9+30/15 12/27+10/15 12/9+10/45 60/9+10/15 12/9+50/15 12/45+10/15 12/9+10/75 84/9+10/15 12/9+70/15 12/63+10/15
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