На неделе саша прочитал три седьмых всей книги,а на этой неделе -половину оставшихся страниц да ещё 20 страниц и дочитал книгу до конца.сколько страниц в книге?
I want you to tell, as I rested this summer. The first month of holidays spent in the preparation of for the competition, which took place in the Tauride this urban village. The competition was fun, though, we took the last place. After the competition me and my parents went to rest in Kazakhstan was a lot of fun . I was in Astana saw many very interesting. When I came home, I had at school internship. In practice, we help the school, performing various jobs.
In the evening I went for a walk with friends. After practice I went to the city of Omsk. In the city I'm good had a rest. Home When it rained, I heard the music and watched movies. These holidays I spent the gut. Write me, how did you spend your holiday!
1 - 3/7 - 4/14 = 4/14 - это 20 страниц
4/14 : 20 = 1/70 - 1 страница, значит, в книге 70 страниц.