5.

a. much

b. fits

6) b) I'll go to the movie theatre with friends.

c) The boys in my class often play football after school.

d) Hoa is helping mother with the housework at the moment.

e) Ba reads books and listens to music.

f) Nga and her family will go to Nha Trang beach, swim in the sea and enjoy some seafood.next summer vacation.

Ờ, mà có ai đi biển Nha Trang vào kỳ nghỉ sắp tới ko ? Đang trả lời câu hỏi thì tớ thấy muốn đi quá !!!

5) c) different

d) narrower

e) wear

f) true

g) better

h) know

tính hợp lí biểu thức sau:45-5 nhân (12+9)

Giải bài toán = cách lập ptrinh ạ?

Gọi số khẩu trang và số chai nước rửa tay lần lượt là a,b

Theo đề, ta có:

10000a+25000b=580000 và a+b=52

=>a=48 và b=4

a: =1/2-2/15=15/30-4/30=11/30

b: =1/4-1/6=3/12-2/12=1/12

c: =1/3-1/4=1/12

d: =5/9-1/4=20/36-9/36=11/36

A) \(\dfrac{1}{2}-\dfrac{2}{15}=\dfrac{15}{30}-\dfrac{4}{30}=\dfrac{11}{30}\)

B) \(\dfrac{1}{4}-\dfrac{1}{6}=\dfrac{3}{12}-\dfrac{2}{12}=\dfrac{1}{12}\)

C)\(\dfrac{1}{3}-\dfrac{1}{4}=\dfrac{4}{12}-\dfrac{3}{12}=\dfrac{1}{12}\)

D)\(\dfrac{5}{9}-\dfrac{1}{4}=\dfrac{20}{36}-\dfrac{9}{36}=\dfrac{11}{36}\)

b. I'm interested in English and History.

c. Nam is good at singing.

e. Why don't we go to the zoo and have some fun ?

f. They are doing their homework and listening to music at the same time.

g. Hoa is the tallest student in the class.

sách j nát zữ