1000:300=3(dư 100)

Cây cờ

4 : 3 = tứ : tam = tám : tư = 2

1,It was such a cull play that he fell asleep

The play is so cull that he fell asleep

2,Jane allowed me to drive her new car

Jane let me drive her new car

3,We couln't get near a because of the police

The police ??

4,I have never seen a better film than this

This is the best film I have seen

5,''How much do you think it will cost'' He said

He wanted to know how much I thought it would cost

6,''Why don't you ask your teacher for advice'' My brother said Tome

My brother suggested Tome asking his teacher for advice

7,It's over 6 months since Long last had his hair cut

Long hasn't had his hair cut for 6 months

8,My sister is too young to stay at home alone

My sister isn't old enough to stay at home alone

9,His parents made him study hard for the exam

He was made to study hard for the exam

10,Unless he changes his way of living, he will meet a lot of trouble

If he doesn't change his way of living, he'll meet a lot of trouble

biến đổi mẫu bằng lũy thừa của 2

sau đó nhân 2 lên vào 2 vế 

cuôi cùng cộng 2B-B=B

kếu quả bạn tự làm nha 

1+2+3+4+5+6+7+8+9=45

mik nhanh nhất, k nha

Gọi a là số thứ nhất, b là số thứ 2, c là số thứ 3. Theo đề bài ta có: 
a + b + c = 210 (1) 
và 6/7.a = 9/11.b = 2/3.c 
6/7.a = 2/3.c => a = 7c/9 (2) 
9/11.b = 2/3.c => b = 22c/27 (3) 
Thế (2), (3) vào (1) ta được: 7c/9 + 22c/27 + c = 210 
=> 21c + 22c + 27c = 5670 
=> 70c = 5670 
=> c = 81

mùa thu

cây rau má.

cha:50 tuổi,con:10 tuổi