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NN
13 tháng 3 2022
a) 4+2/5=22/5
b) 5/4+2=13/4
c) 3+3/2=9/2
d) 3/4-1/8=5/8
e) 17/15-7/10=13/30
g) 25/12-15/8=5/24
h) 5-4/3=11/3
i)15/4-3=3/4
13 tháng 3 2022
a)\(\dfrac{4}{1}+\dfrac{2}{5}=\dfrac{20}{5}+\dfrac{2}{5}=\dfrac{22}{5}\)
b)\(\dfrac{5}{4}+\dfrac{2}{1}=\dfrac{5}{4}+\dfrac{8}{4}=\dfrac{13}{4}\)
c)\(\dfrac{3}{1}+\dfrac{3}{2}=\dfrac{6}{2}+\dfrac{3}{2}=\dfrac{9}{2}\)
d)\(\dfrac{3}{4}-\dfrac{1}{8}=\dfrac{6}{8}-\dfrac{1}{8}=\dfrac{5}{8}\)
e)\(\dfrac{17}{15}-\dfrac{7}{10}=\dfrac{34}{30}-\dfrac{21}{30}=\dfrac{13}{30}\)
g)\(\dfrac{25}{12}-\dfrac{15}{8}=\dfrac{50}{24}-\dfrac{45}{24}=\dfrac{5}{24}\)
h)\(\dfrac{5}{1}-\dfrac{4}{3}=\dfrac{15}{3}-\dfrac{4}{3}=\dfrac{11}{3}\)
i)\(\dfrac{15}{4}-\dfrac{3}{1}=\dfrac{15}{4}-\dfrac{12}{4}=\dfrac{3}{4}\)
24 tháng 5 2020
Unit 17/ Lesson 2 / 4:
1./ 90 000 dong
2./ 73 000 dong
3./ 80 000 dong
4./ 95 000 dong
BN
17 tháng 3 2018
January
February
March
April
May
June
July
August
September
October
November
December
1G
12 tháng 7 2018
1. What is this ? it is a pen
2. Who is he ? he is my teacher
3. Where is your mother ? she is in the kitchen
4. How are you ? I am fine , thanks
5. How old is she ? she is 12 yeards old
O
15 tháng 6 2021
1. what is your name ?
- My name is Mai.
2. how old are you ?
- I'm twelve years old.
3 . how are you today ?
- I'm fine.Thanks
4 . what class are you in ?
- I'm in class 6A2
5 . what your hobby ?
- My hobby is listen to music
6. where are you live ?
- I'm live on Quach Nhan Street
7 . where are you from ?
- I'm from Viet Nam
8 . what your favourite food ?
- My favourite food is chicken
9 . what your favourite drink ?
- My favourite drink is milk
10 . what subject do you ?
- I literature
11. what your favourite book / flim/ story ?
- My favourite film is spooky clown I.T
12 who is your best friend ?
- My best friend is Chien
13 how many people in your family ?
- There are five people in my family
14 . our your man or wonman ?
- I don't know
15. do you have girl friend / boyfriend ?
- No but i have a crush
16. do you have brother / sister / baby ?
- I have a big brother
17. when your birthday ?
- 03 . 12 . 2009
18.how many room in your house ?
- There are twenty rooms
19. what animal do you
- I cats and dogs
20. do you love me ?
- I don't know you
15 tháng 6 2021
1. My name is Shinichi
2. I'm 13 years old.
3. I'm fine.
4. I'm in class 7A10
5. My hobby is reading comic books.
6. I'm live in Hanoi.
7.l'm from Vietnam.
8. My favorite food is hamburger.
9. My favorite drink is orange juice.
10. I maths.
11. Book: Conan..
Film: King Kong.
12...... ( can't say)
13.5 people.
14. Your man
15.both
16. Yes.
17 .31/8/2008
18.5 room.
19. I don't have.
20. No, never.
LN
31 tháng 10 2021
sits / reads / goes/ watches/ brushes/ listens/ walks/ fixes/ hears /plays /studies/ repeats
DT
Đỗ Thanh Hải
CTVVIP
7 tháng 8 2021
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Tải lại câu hỏi
Gọi phân số cần điền vào chỗ trống là \(x\).
Ta có:
\(\dfrac{3}{4}+x=\dfrac{17}{12}\)
\(x=\dfrac{17}{12}-\dfrac{3}{4}\)
\(x=\dfrac{2}{3}\)
⇒ Phân số cần điền vào chỗ trống là \(\dfrac{2}{3}\)