21/10 - 3/4 - 2/5=
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
You must her report carefully before making a decision
A. do
B.study
C.play
D.have
1. This city got 500,000 population.
2. Four people are in my house
Tick giúp mik nha
lV.
1. Where do you live?
2. Which floor is your apartment?
3. How many bedrooms are there in your apartment?
4. What does it have?
5. Who do you live with?
6. Where does she work?
7. Where does he work?
8. What's your house like?
V.
1. What housework do you do?
2. What housework does your mother do?
3. What housework does your brother or sister do?
4. Who does housework the most?
5. What housework does your father do?
1. Chưa thấy sai
2. is -> are
3. don't => doesn't
4. there are => are there
5. Does => do
This sentence 1 has issue:
1. My house doesn’t have garage.
correct.
1. My house doesn’t have a garage.
\(\dfrac{21}{10}-\dfrac{3}{4}-\dfrac{2}{5}=\dfrac{42}{20}-\dfrac{15}{20}-\dfrac{8}{20}\)
\(=\dfrac{42-15-8}{20}\)
\(=\dfrac{19}{20}\)
mẫu số chung là 20 nên
21/10x2=42/20
3/4x2=15/20
2/5x2=8/20
lấy 42/20-15/20-8/20=19/20 nha