Giúp mình nhé!
a) 3-|-2x|=1.1
d) (x+1)(x+2)<0

Rewite the sentence

1. The apples cost 20000dong

=> The apples

Cho biết 40 học sinh lớp 7A đã hoàn thành dự án trồng cây trong
114 ngày. Hỏi lớp 7B hoàn thành dự án đó trong bao nhiêu ngày
biết lớp 7A nhiều hơn lớp 7B 2 học sinh (giả sử năng suất lao
động của mỗi học sinh là như nhau).

Homework
I. Make question for underlined words (do không gạch dưới được nên mình in đậm)
1. He goes to the library once a week
➜
2. My mother works eight hours a day
➜
3. They are going to see a movie tonight
➜
4. The longest vacation is summer vacation
➜
II. Rewrite sentencs
1. Mai drinks more milk than her brother
➜ Mai's brother
2. How much is this school bag ?
➜ How much
3. I often go to bed at nine fifteen
➜ I often
III. Sentence building
1. Trang/ the/ good/ student/ our class
➜
2. The boys/ often/ marbles/ recess ?
➜
3. He/ not send/ me/ present/ my birthday
➜

Short Homework

I. Put the correct verb form
1. He enjoys (draw) _________ pictures
2. This student studies how (fix) ________ a light
3. She should (help) _______ her mother to make a cake
4. Tomorrow is his birthday. He (invite) ________ some friends for his birthday party
II. Make sentence from the cues words
1. I/ usually/ football/ my friend/ my free time
=>
2. Nga/ not want/ go shopping/ big city
=>

Homework!

I. Rewrite the sentence
1. Mai likes colecting the new stamps
=> Mai is interested
2. Nam will visit his grandfather tonight
=> Nam is
3. What's your favorite food ?
=> What food
II. Write the sentences from cues words
1. Hoa/ Lan/ enjoy/ read/ English story
=>
2. Your pen/ expensive/ than/ Ha's
=>
3. Ba/ going/ drive/ father's car/ school ?
=>
4. All students/ like/ play/ sports/ weekend ?
=>
III. Make sentence from these words
1. Her mother/ should/ with/ she/ the/ help/ housework
=>
2. My brother/ good/ the/ using/ is computer/at
=>
3. His father/ for/ never/ late/ is/ work

Hình 3.8 có A 1 ^ − 2 A 2 ^ = B 1 ^ − 2 B 2 ^ . Chứng tỏ rằng a // b.

Thực hiện phép tính

a) (- 12). ( - 3);

b) (- 28). ( -10);

c) ( - 25) . (- 6);

d) (- 20). (- 5).

Cho hai số nguyên tố cùng nhau a và b. Chứng tỏ rằng hai số 11a + 2b hoặc 18a + 5b nguyên tố cùng nhau hoặc có một ước chung là 19