Question

Помогите пожалуйста

Answer 1

$1)2\frac{3}{10}+\frac{4}{10}=\frac{23}{10}+\frac{4}{10}=\frac{27}{10}=2\frac{7}{10}\\\\ 2) 5\frac{13}{17}+4\frac{2}{17}=(5+4)+(\frac{13}{17}+\frac{2}{17})=9+\frac{15}{17}=9\frac{15}{17}\\\\ 3) \frac{4}{15}+4\frac{7}{15}=\frac{4}{15}+\frac{67}{15} =\frac{71}{15}=4\frac{11}{15}$