Question

Вычислите(дроби) помогите

Answer 1

14. 19
--- ---
17. 78
Это ответы

Answer 2

$1) \frac{11}{17} + \frac{3}{17} = \frac{14}{17}$


$2) \frac{7}{8} - \frac{3}{5} = \frac{35}{40} - \frac{24}{40} = \frac{11}{40}$


$3) \frac{10}{21} + \frac{3}{7} = \frac{10}{21} + \frac{9}{21} = \frac{19}{21}$



$4) \frac{7}{26} - \frac{1}{39} = \frac{21}{78} - \frac{2}{78} = \frac{19}{78}$