Помогите срочно!!!!!!не могу трудно зарание спасибо номер 2) 4)

[latex]2:\frac{1}{4}+((1\frac{1}{2}+2\frac{2}{3}):3\frac{3}{4}-\frac{2}{3}):8\frac{8}{9}=\\=\frac{1}{2}+(\frac{25}{6}*\frac{4}{15}-\frac{2}{3})*\frac{9}{80}=\frac{1}{2}+(\frac{10}{9}-\frac{2}{3})*\frac{9}{80}=\frac{1}{2}+\frac{4}{9}*\frac{9}{80}=\frac{1}{2}+\frac{1}{20}=\\=\frac{11}{20}=0,55[/latex] [latex](3\frac{1}{4}+1\frac{1}{6}:1\frac{5}{9}):2\frac{2}{7}+5\frac{1}{9}:7\frac{2}{3}=(\frac{13}{4}+\frac{7}{6}*\frac{9}{14})*\frac{7}{16}+\frac{46}{9}*\frac{3}{23}=\\=(\frac{13}{4}+\frac{3}{4})*\frac{7}{16}+\frac{2}{3}=\frac{16}{4}*\frac{7}{16}+\frac{2}{3}=\frac{7}{4}+\frac{2}{3}=\frac{21+8}{12}=\frac{29}{12}=2\frac{5}{12}[/latex]