Найдите сумму чисел:

1. а)
$1 \frac{6}{17} + 4 \frac{11}{17} = 5 \frac{17}{17} = 6$
б)
$1 \frac{8}{9} + 5 \frac{7}{9} = 6 \frac{15}{9} = 6 \frac{5}{3} = 7 \frac{2}{3}$
в)
$0 + 1 \frac{10}{13} = 1 \frac{10}{13}$
г)
$1 \frac{6}{19} + 2 \frac{7}{19} + \frac{6}{19} = 3 \frac{19}{19} = 4$

2. а)
$6 \frac{8}{21} + 7 \frac{13}{21} = 13 \frac{21}{21} = 14$
б)
$2 \frac{10}{18} + 1 \frac{17}{18} = 3 \frac{27}{18} = 3 \frac{3}{2} = 4 \frac{1}{2}$
в)
$13 \frac{7}{10} + 0 =13 \frac{7}{10}$
г)
$2 \frac{7}{17} + \frac{4}{17} + 3 \frac{6}{17} = 5 \frac{17}{17} = 6$