Ребят , пожалуйста решите , заранее спасибо

Решите задачу:

$\frac{2}{7}+(\frac{5}{7}-\frac{3}{8})=\frac{2}{7}+\frac{5}{7}-\frac{3}{8}=1-\frac{3}{8}=\frac{5}{8}=0,625\\\\4\frac{2}{5}+(-\frac{2}{5}-\frac{3}{7})=4\frac{2}{5}-\frac{2}{5}-\frac{3}{7}=4-\frac{3}{7}=3\frac{4}{7}\\\\(8\frac{3}{4}-7\frac{2}{9})+(2,25-2\frac{7}{9})=8,75-7\frac{2}{9}+2,25-2\frac{7}{9}=\\=11-9-\frac{9}{9}=11-10=1\\\\7,2-(3,2-5,9)=7,2-3,2+5,9=4+5,9=9,9\\\\(4,8+2,75)-(4,8-3,25)=4,8+2,75-4,8+3,25=6\\\\-6,9-(4,21-10,9)=-6,9-4,21+10,9=4-4,21=-0,21$
$\\\\(3,72-5,43)-(4,57+3,22)=3,72-5,43-4,57-3,22=\\=0,5-10=-9,5\\\\(x+y-z)*3=3x+3y-3z\\\\4(m-n-p)=4m-4n-4p\\\\-8(a-b-c)=-8a+8b+8c\\\\(2x-y+3)*(-2)=-4x+2y-6\\\\-1*(3m-2n+p)=-3m+2n-p$