các anh tị giúp zới
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Bài 1:
\(a,=\left(2\dfrac{3}{4}+\dfrac{1}{4}\right)+\left(\dfrac{4}{21}+\dfrac{17}{21}\right)-\dfrac{1}{2}=3+1-\dfrac{1}{2}=\dfrac{3}{2}\\ b,=-\dfrac{2}{3}\left(43\dfrac{1}{4}-13\dfrac{1}{4}\right)=-\dfrac{2}{3}\cdot30=-20\\ c,=-\dfrac{11}{3}:\left(\dfrac{5}{2}\cdot\dfrac{3}{5}-\dfrac{10}{3}\right)=-\dfrac{11}{3}:\left(-\dfrac{8}{3}\right)=\dfrac{11}{8}\)
Bài 2:
\(a,\Rightarrow x+\dfrac{1}{3}=-\dfrac{1}{3}\Rightarrow x=-\dfrac{2}{3}\\ b,\Rightarrow\left|x+\dfrac{2}{5}\right|=1\dfrac{1}{2}+\dfrac{1}{2}=2\\ \Rightarrow\left[{}\begin{matrix}x=2-\dfrac{2}{5}=\dfrac{8}{5}\\x=-2-\dfrac{2}{5}=-\dfrac{12}{5}\end{matrix}\right.\\ c,\Rightarrow\left(x+\dfrac{1}{4}\right)^3=-\dfrac{27}{8}=\left(-\dfrac{3}{2}\right)^3\\ \Rightarrow x+\dfrac{1}{4}=-\dfrac{3}{2}\Rightarrow x=-\dfrac{7}{4}\)
Bài 3:
Gọi số máy 3 đội ll là a,b,c(máy;a,b,c∈N*)
Áp dụng tc dtsbn:
\(10a=8b=12c\Rightarrow\dfrac{10a}{120}=\dfrac{8b}{120}=\dfrac{12c}{120}\\ \Rightarrow\dfrac{a}{12}=\dfrac{b}{15}=\dfrac{c}{10}=\dfrac{b-a}{15-12}=\dfrac{3}{3}=1\\ \Rightarrow\left\{{}\begin{matrix}a=12\\b=15\\c=10\end{matrix}\right.\)
Vậy...
Bài 5:
\(\dfrac{a}{2}=\dfrac{b}{5}=\dfrac{c}{7}=\dfrac{a-b+c}{4}=\dfrac{a+2b-c}{5}\\ \Rightarrow A=\dfrac{4}{5}\)

1. My school has 50 classroom
2. Let's go to the movie theater
3. She is interested in music and maths
4. Her mother allows her to watch tv at the weekend
5. My school has a playground
6. How about decorating the Christmas tree
7. ... into Shakespear's play
8... us all day to clean our room
9... has a thousand students
10... play tennis
11... is interested in E and H
12 ... me to stay in bed late at the weekends

53+115 : fifty-three plus one hundred fifteen
132+763 :one hundred thirty two plus seven hundred sixty three
880+2318 :eight hundred eight plus two thousand three hundred ang eighteen
365+2302 :three hundred sixty five plus two thousand three hundred two
448+525 :four hundred forty eight plus five hundred twenty five
53-115: fifty-three minus one hundred fifteen
132-763 :one hundred thirty two minus seven hundred sixty three
880-2318 :eight hundred eight minus two thousand three hundred and eighteen
365-2302 :three hundred sixty five minus two thousand three hundred two
448-525 :four hundred forty eight minus five hundred twenty five
53+132: fifty-three plus:one hundred thirty two
2302 -448: two thousand three hundred two minus four hundred forty eight
365+525 :three hundred sixty five plus five hundred twenty five
các câu còn lại làm tương tự nhé

-Chúng ta tôn thờ các vị anh hùng đó, được các cô giáo chuyên môn Sử dạy về công lao to lớn của họ để chúng ta biết ơn, tự hào và đáng để noi theo cho các thế hệ sau.

All of the special holidays in my country, I Tet the most. Tet is an occasion to everyone get together in warm atmosphere. Before Tet holiday, Everyone prepares many things and decorates their house. I plant a lot of flowers in front of my house and buy many things such as clothes, foods ...
Besides, most of the streets also are decorated beautifully with colorful lights and flowers. During Tet, I spends more time on visiting my relatives, friends and colleagues. Especially, I give to each other the best wishes for the new year. Tet is an opportunity for children receive lucky money. There is a funny thing that people try to avoid argument or saying any bad things at Tet. I love Tet holiday!
Để cho tớ-1+1= mấy🇻🇳😀😇
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