Хелп ми номер 24 плиз

Решите задачу:

$3 \frac{1}{8}-2 \frac{2}{3}+ \frac{1}{6}= \frac{24+3-16+4}{24} = \frac{15}{24} \\ \\ 3 \frac{11}{18}-1- \frac{5}{9}=2 \frac{11-10}{18} =2 \frac{1}{18} \\ \\ 4 \frac{3}{5}-2+ \frac{7}{10}=2 \frac{3}{5}+ \frac{7}{10}=2 \frac{6+7}{10}=2 \frac{13}{10}=3 \frac{3}{10}$

$2 \frac{13}{30}-(1 \frac{1}{10}+ \frac{1}{5}) =2 \frac{13}{30}-(1 \frac{1+2}{10} )= \\ \\ =2 \frac{13}{30}-1 \frac{3}{10}=1 \frac{13-9}{30}=1 \frac{4}{30}=1 \frac{2}{15}$

$3 \frac{7}{8}-2 \frac{3}{4}+ \frac{1}{2}=1 \frac{7-6+4}{8}=1 \frac{5}{8} \\ \\ 2 \frac{8}{15}-(1 \frac{3}{10}+ \frac{2}{5})= 2 \frac{8}{15}-(1 \frac{3+4}{10} )= \\ \\ =2 \frac{8}{15}-1 \frac{7}{10}= \frac{30+16-21}{30} = \frac{25}{30}= \frac{5}{6}$