Привет! Давай разберем этот пример по частям.
\[ 4 \frac{1}{2} = \frac{4 \times 2 + 1}{2} = \frac{9}{2} \)
\[ 10 \frac{3}{17} = \frac{10 \times 17 + 3}{17} = \frac{170 + 3}{17} = \frac{173}{17} \)
\[ 2 \frac{9}{3} = 2 + 3 = 5 \)
\[ 7 \frac{3}{4} = \frac{7 \times 4 + 3}{4} = \frac{28 + 3}{4} = \frac{31}{4} \)
\[ \frac{9}{2} + \frac{173}{17} - 5 + \frac{31}{4} \)
\[ \frac{9 \times 34}{68} + \frac{173 \times 4}{68} - \frac{5 \times 68}{68} + \frac{31 \times 17}{68} \)
\[ \frac{306}{68} + \frac{692}{68} - \frac{340}{68} + \frac{527}{68} = \frac{306 + 692 - 340 + 527}{68} = \frac{1185}{68} \)
\[ \frac{1185}{68} = 17 \frac{29}{68} \)
Ответ: 17 rac{29}{68}