1.\(x=\dfrac{y}{6}=\dfrac{z}{3}và2x-3y+4z=24\)
2.\(\dfrac{x-1}{2}=\dfrac{y+3}{4}=\dfrac{z-5}{6}và5z-3x-4y=50\)
3.\(6x=10y=15zvàx+y-z=90\)

1.\(\left(7x+2\right)\left(x-1\right)=0\)
2.\(\left(1-3x\right)^2=\dfrac{1}{81}\)

a,\(5.\left(x+2\right)^3+7=2\)
b,\(14-\left|\dfrac{3x}{2}-1\right|=9\)

1.

The roads in Vietnam are very new and long.

True

False

Not Given

2.

Some motorists travel on the pavement.

True

False

Not Given

3.

It always takes people hours to get out of the congestion.

True

False

Not Given

4.

Many roads in Vietnam are narrow.

True

False

Not Given

5.

According to the video, there are four reasons for traffic jams in Vietnam.

True

False

Not Given

1.

Vietnam is a ________.

A. developing country

B. alarming problem

C. Hanoi capital

2.

Traffic jams in Vietnam frequently take place in ________ during rush hour.

A. Hanoi

B. Ho Chi Minh City

C. Both A & B are correct.

3.

Most vehicles in traffic jams in Vietnam are _______.

A. motorbikes and buses

B. motorbikes and cars

C. bicycles and motorbikes

4.

The main cause of the problem is ________.

A. the very large number of road users

B. the rapid increase in car use

C. the deterioration of roads

5.

According to the video, __________ is also the cause of traffic jams.

A. the project of repairing roads
B. lack of awareness about traffic rules

C. Both A & B are correct.