Question

Добрый вечер! Спасайте!

Answer 1

Надеюсь,что почерк понятный))

Answer 2

$\frac{3}{10} + \frac{2}{15} = \frac{9}{30} + \frac{4}{30} = \frac{13}{30} \\ \frac{71}{20} + \frac{74}{30} = \frac{361}{60} = 6.016 \\ \frac{11}{12} - \frac{5}{6} = \frac{11}{12} - \frac{10}{12} = \frac{1}{12} \\ 3 \frac{5}{6} - 2\frac{3}{4} = \frac{59}{6} - \frac{11}{4} = \frac{85}{12} = 7.083 \\ \frac{3}{8} \times \frac{1}{5} = \frac{3}{40} \\ 2 \frac{1}{7} \times 2 \frac{1}{3} = \frac{15}{7} \times \frac{7}{3} = 5 \\ \frac{2}{3} \div \frac{2}{7} = \frac{2}{3} \times \frac{7}{2} = \frac{7}{3} = 2.3 \\ 8 \frac{1}{3} \div 2 \frac{2}{3} = \frac{25}{3} \div \frac{7}{3} = \frac{25}{3} \times \frac{3}{8} = \frac{25}{8} = 3.125$