7(2x- 1)-3(4x- 1)= 4(3x+2)- 1； (5y+ 1)+( 1-y)=(9y+ 1)+( 1-3y)； 20%+( 1-20%)(320-x)= 320×40% 2(x-2)+2 = x+ 1 2(x-2)-3(4x- 1)-9( 1-x)x/3-5 =(5-x)/2 2 2(x+ 1)/3 = 5(x+ 1)/ 6-65438+(5y+ 1)+( 1-y)=(9y+ 1)+( 1-3y)3。 [(-2)-4]= x+24.20%+( 1-20%)(320-x)= 320×40% 5.2(x-2)+2 = x+ 1 6.2(x-2)-3(4x- 1)= 9( 1-x)7. 1 1x+64-2x = / kloc-0/0( 1/5)x+ 1 =(2x+ 1)/4 30。 (5-2)/2-(4+x)/3 = 1 15X-8(5x+ 1.5)= 18 * 1.25+x 3X+ 189 = 52 1 4Y+ 1 19 = 22 3X * 189 = 5 8Z/62(x-2)-3(4x- 1)= 9( 1-x)2。 1 1x+64-2x = 100-9x 3。 15-(8-5x)=7x+(4-3x) 4。 3(x-7)-2[9-4(2-x)]=22 5。 3/2[2/3( 1/4x- 1)-2]-x = 2 ^ 6。 2(x-2) +2=x+ 1 7。 0.4(x-0.2)+ 1.5 = 0.7x-0.38 8。 30x- 10( 10-x)= 100 9。 4(x+2)=5(x-2) 10。 120-4(x+5)= 25 1 1。 15x+863-65x=54 12。 12.3(x-2)+ 1 = x-(2x- 1) 13。 1 1x+64-2x = 100-9x 14。 14.59+x-25.3 1 = 0 15。 x-48.32+78.5 1=80 16。 820- 16x=45.5×8 17。 (x-6)×7=2x 18。 3x+x= 18 19。 0.8+3.2=7.2 20. 12.5-3x=6.5 2 1。 1.2(x-0.64) =0.54 22。 x+ 12.5=3.5x 23。 8x-22.8= 1.2 24。 1\ 50x+ 10=60 25。 2\ 60x-30=20 26。 3\ 3^20x+50= 1 10。 4\ 2x = 5x-3 28。 5 \ 90 = 10+x29。 6 \ 90+20x = 30 ^ 30。 7 \ 69 1+3x = 700 1。 When typing the manuscript, Party A will use 12 hours alone. 2. A suit with more tops than trousers. 30 yuan, if the unit price of trousers is 75% of the coat, how much are the coat and trousers? 3. To build a road with a length of 3000m, 25% of the total length will be completed in the first week, and150m will be completed in the second week. How many meters are left to be repaired? Let me answer 1 for him.
、
2003
What is the per capita arable land area in the world in 2000?
2500
Square meters,
China's per capita arable land accounts for only 20% of the world's per capita arable land.
five
2
What is the per capita arable land area in China?
2
、
Whales are very long.
28
Rice,
The height of a person is the length of a whale.
35
2
How tall is this man?
three
6 (
2
) The class did it.
180
Facing a small flag, it's done.
six
five
How many noodles have not been made?
four
、
The heartbeat of teenagers is about every minute.
75
Second,
The baby's heartbeat every minute.
Twice as many as teenagers
five
four
. What is the baby's heartbeat per minute?
Time?
five
、
1999
The world population reached 1960.
60
Billion, it is estimated.
20 13
This year will increase.
increase
six
1
20 13
How many billion people will the world population reach?
six
There are popular science books in the school.
320
Ben is in charge of all the books.
five
2
Popular science books are equivalent to story books.
three
four
How many libraries are there?
A book? How many story books are there in the library?
seven
、
The art group has
25
People,
The art troupe is smaller than the model airplane.
Zudo
four
1
How many people are there in the model airplane team?
eight
、
Xiaohong watched it at the weekend.
35
Page,
It happens to be this extracurricular reading.
seven
five
How many pages are there in this extracurricular reading?
nine
In the first half of last year, a TV factory produced TV sets.
48
Ten thousand units,
It was produced in the second half of the year.
five
four
. This TV factory spent a whole year last year.
What is the output of ten thousand units?
10
The longest river in the world-the Nile.
6670
Kilometers,
The Yangtze River is bigger than the Nile River.
10
nine
Still very long
297
Kilometers, the Yangtze River is very long.
Less than a kilometer?
1 1
、
The canteen is delivered.
360
Kilograms of rice,
The total amount was used up on the first day.
about
three
1
How many kilograms of rice did you use on the first day?
12
6 (
three
There are students in the class.
45
People, of which the number of boys accounts for.
five
three
, 6 (
three
How many boys are there in the class?
13
Type a copy by a typist
3200
The first draft has been completed.
View from a height or a distance
four
three
How many words have you typed?
14
、
The original price of a dress
108
Yuan,
After discount, the current price is the original price.
nine
seven
What is the original price of this dress?
15
、
Look in winter.
300
A few pages of fiction,
I read this book in the first week.
five
2
The second week I saw the first week's.
six
five
How much did you see in the second week?
Peggy?
16
5 (
three
) the class donated money, and donated it on the first day.
130
Yuan,
The next day I donated more than the first day.
five
1
How much did you donate the next day?
17
The road team needs to build roads.
12
Kilometers of roads have been built.
View from a height or a distance
eight
five
How many kilometers to repair?
18
Dolphins can swim every hour.
70
Kilometers, the speed ratio of blue whales
It's slow
seven
1
How many kilometers can a blue whale swim per hour?
19
The total length of a telephone pole
12
Kilometers, the part buried underground
Full-length
six
1
The length of a telephone pole exposed to the ground.
How many meters is it?
20
Original price of washing machine
celebrity
Yuan, the price is reduced now.
four
1
current price
how much is it?
2 1
、
The original computer in the school computer room
96
Taiwan Province,
Now it has increased.
eight
1
* * * How many computers are there now?
22
、
What is the turnover of a supermarket in February?
120
Ten thousand yuan,
Marching ratio
It increased in February.
five
1
What is the turnover in March?
23
、
The school used water last month.
640
Tons,
This month is more economical than last month.
View from a height or a distance
four
1
How many tons of water was used this month?
24
, a rectangular flower bed, long is
eight
Meter, width-length ratio
four
1
What is the width of this rectangle?
25
What is mom's weight?
50
Kilogram, father is heavier than mother.
four
1
How many kilograms does dad weigh?
26
a book
280
Page story book, Liang Liang has read it.
four
1
How many pages are left to read?