In a bookcase there were 645 books from them 180 books gave to library a part of books brought to the dacha in a case there were 297 books How many books brought to the dacha the 3rd class the equation with number x

153
Was - 645 books in library - 180 books to the dacha - x there were-297 books of the 645-180th =297 465th =297 x =465-297 x =168 books brought to the dacha 1)645-180=465 (j) - there was 2)465-297=168 (j) - brought to Answer's dacha: brought to making 168 books
161
Answer add