Solutions by everydaycalculation.com
1st number: 4 2/3, 2nd number: 8/21
143 + 821 is 10621.
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Related: 28/3+8/21 14/3+16/21 14/6+8/21 14/3+8/42 42/3+8/21 14/3+24/21 14/9+8/21 14/3+8/63 70/3+8/21 14/3+40/21 14/15+8/21 98/3+8/21 14/3+56/21 14/21+8/21
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