Предмет: Алгебра, автор: darinatokar083

доведіть тотожність 5а-(4а-(3а-2))=2(2а-1)=​

Ответы

Автор ответа: wieslawlozickip5w1nd
0

Ответ:

Объяснение:

5а-(4а-(3а-2))=2(2а-1

5a-(4a-3a+2)=2(2a-1)

5a-4a+3a-2=2(2a-1)

4a-2=2(2a-1)

2(a-1)=2(2a-1)

Предыдущий вопрос
Следующий вопрос
Интересные вопросы
Предмет: Русский язык, автор: Shaliko2007
Девочка заблудилась в лесу она пришла к домику там жили три медведя медведей дома не было они ушли гулять по лесу Сколько здесь предложений
2 года назад
Предмет: Английский язык, автор: koshka6432koshka
Помогите решить тест!!!

1.I just ____ stand it.
a) may b) can c) may not d) can not

2.It’s a nice day today, ____?
a) isn’t it? b) doesn’t it? c) is it not? d) aren’t it?

3.To ___ left of ___ window there is a picture.
a)a; a b)a; the c)the; the d) the; a e) a; ---
f) --- ; a g) --- ; the h) the; --- i) ---; ----

4.Miss Sharp’s ___ father was ___ pianist.
a)a; a b)a; the c)the; the d) the; a e) a; ---
f) --- ; a g) --- ; the h) the; --- i) ---; ----

5.There were ____ two beds with ____ large pillows on it.
a)a; a b)a; the c)the; the d) the; a e) a; ---
f) --- ; a g) --- ; the h) the; --- i) ---; ----

6.___ you shut the window, please?
a) may b) can c) must d) should e) need

7.Motor-racing ____ a dangerous sport.
a) is b) is not c) am d) am not e) are f) are not

8. Wow! You cook ____.
a) good b) well c) badly d) bad

9.There is no ____ information.
a) far b) farther c) the farthest d) further e) the furthest

10. You haven’t got a dog, ____?
a) do you? b) don’t you? c) aren’t you? d) are you? e) have you?

11.Would you like ____ cup of tea?
a) other b) the other c) another d) others

12.The bar ____ by two very nice girls.
a) keep b) kept c) was kept d) keeps

13.____ is perfect. That’s a pity!
a) everything b) nothing c) anything d) something

14.There ____ anyone here who can help you.
a) is b) isn’t c) am d) am not e) are f) aren’t

15.I ____ her yesterday, but tomorrow I ____.
a) didn’t write; did b) won’t write; will
c) didn’t write; will d) won’t write; did

16.We arrived just ____ time.
a) in b) on c) at d) for

17.Suddenly I ___ that I ______ anything since early morning.
a) remembered; ate b) remembered; had not eaten
c) had remembered; ate d) had remembered; had not eaten
18.I supposed that my brother _____ .
a) is sleeping b) will sleep
c) has slept; d) would be sleeping

19.We were told that the tourists ____.
a) are gone b) were gone
c) have gone d) had gone

20.He ______ classical music.
a) is always preferred b) was always preferred
c) has always preferred d) had always preferred

21.Will you come to my birthday party? – I’d love to, but I’m afraid I ____.
a) may not b) can’t c) mustn’t d) shouldn’t e) needn’t

22.He ____ the TV to watch cartoons yesterday morning.
a) is turning on b) was turning on
c) turns on d) turned on

23.How often ____ to the dentist’s?
a) do you go b) did you go
c) are you going d) were you going

24.You ____ behave like that. (нельзя так себя вести)
a) may not b) can’t c) mustn’t d) shouldn’t e) needn’t
2 года назад
Предмет: Немецкий язык, автор: vica00000
Сделайте все упражнения дам уз баллов
2 года назад
Предмет: Українська мова, автор: kostyaborisenk10000
українське прислів'я говорить твір у форматі зно
8 лет назад
Предмет: Русский язык, автор: Yulia123420061
Даю 15 баллов
В каком случае нужно вставить букву И?
1. смотр…т
2. подмета…т
3. постел…т
4. почу…т
Срочно,пж,плииз
Если можно то с объяснением
8 лет назад