сочинение на тему"История происхождения песчинки"

в двузначном числе десятков втрое больше,чем единиц. Если от этого числа отнять число,записанное теми же цифрами,но в обратном порядке,то получится 36.Найти число.

ПОМОГИТЕ ПРОШУ ВАС!!!....

  Put the verbs in brackets into the Present Simple or the Present Progressive form. Complete the sentences with the right pronouns.

1. What (be) his advice? — I haven't asked him for ... yet.
2. Your luggage (be) too heavy. They'll have to charge you for ... .
3. Her clothes (show) her good taste. ... really (look) great.

4. The football team (take) a shower at the moment. You can talk to ... later.
5. Physics (become) one of the most important subjects in our school. We all enjoy studying ....
6. The weather in this part of the world (change) very fast. You have to check ... before going out.
7. Where (be) my jeans? Have you seen ...?
8. These gloves always (keep) me warm. You should try ... on.
9. Her good looks (make) her very proud.— Yes, she thinks about... all the time.
10. The news you brought (change) everything. We need to discuss ... as soon as possible.
11. His money (be) on the table. He always forgets where he has left... .
12. They (change) posters on the Opera House.— I know. A new ballet (come) here next week.

Запишите уравнения реакций, с помощью которых можно осуществить следующие превращения:

N2 - NH3 - NO - NO2 - HNO3 - NO2

(Во вложении номер 4)