a) \( \frac{7}{10} + \frac{1}{10} = \frac{8}{10} \)
б) \( \frac{7}{12} + \frac{1}{4} = \frac{7}{12} + \frac{3}{12} = \frac{10}{12} \)
в) \( \frac{1}{5} + \frac{2}{15} = \frac{3}{15} + \frac{2}{15} = \frac{5}{15} \)
г) \( \frac{5}{6} + \frac{1}{9} = \frac{15}{18} + \frac{2}{18} = \frac{17}{18} \)
a) \( \frac{8}{10} \)
б) \( \frac{10}{12} \)
в) \( \frac{5}{15} \)
г) \( \frac{17}{18} \)