Solutions by everydaycalculation.com
1st number: 4 2/3, 2nd number: 7/15
143 + 715 is 7715.
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Related: 28/3+7/15 14/3+14/15 14/6+7/15 14/3+7/30 42/3+7/15 14/3+21/15 14/9+7/15 14/3+7/45 70/3+7/15 14/3+35/15 14/15+7/15 14/3+7/75 98/3+7/15 14/3+49/15 14/21+7/15
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