Question

б)-2/3*(6/7-y)+(2/7+y)
в)-(y+1/8)+3/4*(2+y)
г)1/9*(3/5-x)-(x-1/15)
Помогите решить.Срочно!

Answer 1

$- frac{2}{3} ( frac{6}{7} -y)+(frac{2}{7} +y)=- frac{4}{7} +frac{2}{3}y+frac{2}{7} +y=- frac{2}{7} +frac{5}{3}y \ -(y+ frac{1}{8} )+ frac{3}{4} (2+y)=-y-frac{1}{8}+ frac{3}{2}+frac{3}{4}y=frac{11}{8}-frac{1}{4}y \ frac{1}{9}( frac{3}{5}-x)-(x- frac{1}{15})= frac{1}{15}- frac{1}{9}x-x+ frac{1}{15}= frac{2}{15}- frac{10}{9}x$