Question

Ну сделать дроби Большие

Answer 1

$displaystyle 833. \\1)..frac{1/2+2/3}{3/5-2/15}=frac{3/6+4/6}{9/15-2/15}=frac{7}{6}:frac{7}{15}=frac{15}{6}=2frac{1}{2}\\2)..frac{3/2-2/3}{1/6+1/9}=frac{9/6-4/6}{3/18+2/18}=frac{5}{6}:frac{5}{18}=frac{5}{6}*frac{18}{5}=3\\3)..frac{1/3-2/15}{1/5-1/7}=frac{5/15-2/15}{7/35-5/35}=frac{1}{5}: frac{2}{35}=frac{1}{5}*frac{35}{2}=3,5\\4)..frac{1/4-1/6}{3/8-1/3}= frac{3/12-2/12}{9/24-8/24}=frac{1}{12}:frac{1}{24}=frac{1}{12}*24 =2$

$displaystyle 835.\\1).. frac{2/5*1/4*5/6}{2/3*6/7*7/8}= frac{1/3*1/4}{2/3*3/4}= frac{1}{12}: frac{6}{12}= frac{1}{6} \ \ 2).. frac{1/3*1/4*1/2}{5/6*2/3*1/12}= frac{1}{24}: frac{5}{108}= frac{1}{2}* frac{9}{5}=0,9 \ \ 3).. frac{5/9*1/6*5/18}{1/18*2/3*1/9}= frac{25}{9*6*18}* frac{18*3*9}{2}= frac{25}{4}=6,25\\4).. frac{3/5*2/15*1/12}{1/6*2/5*3/10}= frac{3*2}{5*15*12}* frac{6*5*10}{2*3}= frac{2}{2*3}= frac{1}{3}$

Answer 2

Удачи!..))

Answer 3

пока

Answer 4

в 835 под №3 - исправление.

Answer 5

я уже знал

Answer 6

под книгой проверял