Answer :

Lilith
[tex](12 \frac{4}{7} + 2 \frac{3}{14})+2\frac{ 6}{14}=(12 \frac{8}{14} + 2 \frac{3}{14})+2\frac{ 6}{14}=14 \frac{11}{14} +2\frac{ 6}{14}=16 \frac{17}{14} =17\frac{3}{14}[/tex]


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