Предмет: Математика, автор: Аноним

РОЗВЯЖИ РИВНЯННЯ 1) 3 1/14 - 1 2/3 Х = 2 5/21

Ответы

Автор ответа: kaktys2l
2

Відповідь:

Покрокове пояснення:

Приложения:
Автор ответа: iramazurk
1

Ответ:

1/2

Пошаговое объяснение:

3 1/14 - 1 2/3х = 2 5/21

1 2/3х = 3 1/14 - 2 5/21

1 2/3х = 3 3/42 - 2 10/42

1 2/3х = 2 45/42 - 2 10/42

5/3х = 35/42

х = 35/42 : 5/3

х = 35/42 * 3/5

х = 7/14 * 1/1

х = 7/14

х = 1/2

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5. Put the verb from bracket in Future Simple.

- I …………………………………… to Spain someday. (go)
- She ……………………………….. this movie. (not see)
- …………………………. you ……………………….. your grandmother this summer? (visit)
- We ………………………………. write this essay. (not write)
- ……………………… he ……………………… a birthday party this year? (throw)
- They ……………………………… for the taxi this time. (pay)

6. Put the verb from bracket in Present Perfect.

- I ……………………………….. no time to tidy my room. (have)
- She ………………………………… her work yet. (not finish)
- That book ………………………… on the table for weeks. (be)
- ……………….. you ………………….. to John lately? (talk)
- We ……………………………….. the butcher for over three weeks. (not pay)
- …………………. she ……………… anything today? (eat)
- I …………………………….. you since we met a year ago. (not see)
- How many times ………………… you …………………. so far? (lost)
- Bob and I ……………………………………. here for as long as I can remember. (live)

7. Insert FOR or SINCE

- We have been waiting here ……………………. an hour.
- We haven’t seen rain here …………………… more than 30 months.
- Everybody has recognized me ……………………. they saw me on TV.
- My parents have known each other …………………………. 1975.
- I haven’t watched any films …………………….. last month.
- I haven’t visited the Normans ………………… ages.
- Their son has been involved in modern art ……………… over five years.
- My mother hasn’t met Tom……………….. his birthday.
- My dad has had fie cigarettes ………………… he got up.