aplique todas las propiedades de las operaciones aritmeticas y algebraicas para demostrar que si M =N entonces M=0 o 2=0 por favoooor es urgente ​

Respuesta:

Explicación paso a paso:

Respuesta:

Una oración es una unidad de sentido que expresa una coherencia completa, es decir, es una unidad sintáctica con sentido. Por ejemplo: El juez dictó su sentencia.

Respuesta:

se cree

Explicación:

Respuesta:

Abajo

Explicación:

EXERCISE 1

1. I have seen this film once.

2. Carol has painted her bedroom.

3. Peter has broken his leg.

4. She hasn't called her mother.

5. I haven't had bread for days.

6. They have been to Italy twice.

7. Jim has sold his car.

8. Tina has washed her hair.

9. Have you seen Jim today?

10. Liam has lost his keys.

11. Lucy has not missed the bus.

12. We haven't played golf today.

SINCE/ FOR

1. Our family have lived in the north of the USA since 1997.

2. My father has worked as an engineer since then.

3. My parents have divorced for more than five years now.

4. My sister has known her boyfriend for six years.

5. I have not seen my aunt since last summer.

6. My friend Tommy lives in the south, I have not talked to him for a long time.

7. My friend Margo has written me two letters since I met her at the summer camp.

NEVER/ EVER

1. I have never been to London.

2. Have you ever seen the Eiffel Tower?

3. I have never skated on the skating-rink.

4. Sam has never been to a football match.

5. Have you ever flown to Madrid?

6. We have never travelled by plane.

7. Liz has never booked a trip to Morocco.

8. Has Tom ever cooked lunch?

9. They have never flown in the helicopter.

ALREADY/ YET

1. Nick has already drunk a cup of tea.

2. I haven't swept the floor yet. It is very dirty.

3. She has already seen this film.

4. The boys have already broken a new vase.

5. Have they already copied the text?

6. I have already sent an SMS to my friend.

7. Tim hasn't been at the concert yet.

8. She has already read an interesting article.

9. They haven't invited their neighbours yet.

JUST

1. They have just went to the cinema.

2. Kate have just met her friend.

3. She have just invited her friend to the party.

4. They have just finished their English test.

5. Bill have just sent an email to his parents.

6. I have just bought a new mobile.

7. Bob have just found a new article.

8. Lix have just gotten the driver's license.

9. We have just read about New York.