Надо срочно, (ж , з , и)Даю 20 балов

Решите задачу:

$10\frac{3}{23} - 7 \frac{19}{46} = \frac{233}{23} - \frac{341}{46} = \frac{466-341}{46} = \frac{125}{46} = 2 \frac{33}{46}$
$16 \frac{2}{5} - 4 \frac{3}{7} = \frac{82}{5} - \frac{31}{7} = \frac{574-155}{35} = \frac{419}{35} = 11 \frac{34}{35}$
$19\frac{5}{12} - 8 \frac{17}{18} = \frac{233}{12} - \frac{161}{18} = \frac{699-322}{36} = \frac{377}{36} =10 \frac{17}{36}$