Прямая задача:
1) 32+8 = 40 (книг) - на второй полке.
2) 40+5 = 45 (книг) - на третьей полке.
3) 32+40+45 = 117 (книг) - всего на трёх полках.
ответ: 117 книг.
Первая обратная задача:
Всего на трёх полках было 117 книг. На первой полке 32 книги, это на 8 книг меньше, чем на второй. Оставшиеся стояли на третьей полке.
1) 32+8 = 40 (книг) - на второй полке.
2) 117-32-40 = 45 (книг) - было на третьей полке.
ответ: 45 книг.
Вторая обратная задача:
Всего на трёх полках было 117 книг. На первой полке 32 книги. На третьей на 13 больше, чем на первой. Оставшиеся стояли на второй полке.
1) 32+13 = 45 (книг) - на третьей полке.
2) 117-32-45 = 40 (книг) - было на второй полке.
ответ: 40 книг.
A hobby is something that you enjoy doing in your free time. i think that hobbies help you not to waste your spare time doing nothing. most people choose a hobby to their liking. Playing computer games has became a very popular hobby both with children and adults. i love comp. games. on the one hand it is nice that a person has such a hobby but on the other hand it can do harm to health. Personally my major hobby is listening to music. I have all song my favourite group. There are people who don't have hobbies but they still have their own ways of speading free time. My friends likes travelling and he spends most of his free time travelling across Russia. As fo me, i like playing at the guitar in my free time. In general, i consider it necessary to have a hobby or favourite things to do, because in this case you don't waste your time doing hithing
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