Ask for 7th grade math star workbook answers

1.The solution of equation 2x-3=x+2 is (5).

2.The following equation is correct for the deformation process (d)a, x+2=3x-4, giving x+3x=2-4 (b): 5x=-3, getting x=5/3 (c):

x+1=0 out of 3 gives x=3 (d): x-1=1 out of 2 gets x=4

3.The difference between a number minus one-third of its is equal to one in four, and the side of this number is (3 8).

4.Solve the equation and the process is complete.

3x+5=4x+1

Solution: 3x-4x=1-5

x=-4x=4

9-3y=5y+5

Solution: Same as above, we get y=-1 2

3x=5x-4

Solution: Same as x=2

5.If a car's fuel tank is full of fuel, and after using 1/3 of it, and adding 15 liters, the fuel tank is exactly full again, ask: How many liters of fuel can the tank hold?

45 liters. 6。Knowing that the sum of three consecutive natural numbers is 165, find these three natural numbers.

Here's what I'm going to fix earlier: use the properties of the equation to solve the equation. and inspected.

x-1 out of 3 = 7

x==245-1t of 3/3 = 4t+8/3

t=-9/5

Workbook 1:1The unit price of a drug last year was 12 yuan, and the price of the drug this year was reduced by x%, and the unit price of the drug this year is: (list the equation, not calculate).

12*x%2.The charging standard for a taxi in one place is: the starting price is 10 yuan, and after 3 kilometers, 2 yuan per kilometer. The matchmaker took a taxi for 5 kilometers and should pay (14) yuan, and if he took x(x>3) kilometers, he should pay (10+2 (x-3)) yuan.

3A communication company will be mobile phone time bill per minute after a yuan reduction, again reduced by 15%, the side of the current charge standard is per minute ((yuan, has been the company according to the minute yuan first reduced by 15%, in the reduction of a yuan, the side is now charged per minute (yuan.

4.Solve the equation and the process is complete.

x+1x/2 + 1x+5=126

Solution: x=66

500x20%-10%x=500x10%

Question 1 7/8 = 2=4=5/6 2 Question 8,1/5,3,4 spine such as 1,0,1,1,1,1,1 Question 3 4/3, 5/8, 7/5, 9/13, 8, 1/12 Question 4 True or False Question 5 Three-two, 4, 6, five-thirds Question 6 Fifteen sevenths, three-fifths, 14 cherry blossoms, 18,1, 7/31, 20/7 Question 7 The first is connected to the third, and the second is connected to the first. The third is the second, the first is the third, the second is the first, the third is the second, and the eighth question (1) 28/39 (2) 99 and 1/10 (2) 100 and 9 cents, I have the answer!! Put a hundred hearts.

You're too lazy, kids, and you don't even post questions for help online.

Are you still waiting for someone to find you the Shuzhou clan to pass on the answer! ~

Reading mainly depends on your own book, and you have to do it by yourself.

Acute angle. Right angled, isosceles.

Rectangular, parallelogram, isosceles triangle.

The bend is 6 >

9> Vertical source.

With one. of the buried land corner and one.

The horns are put together.

Outline. Outline.

Whoever is specific, which unit is specific, otherwise there are a lot.

Embarrassed: You can find a copy of your classmates.

The title shot is scattered early, and the eyes are attacking the birds.

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8.（1） 160/9 (2) 22 10.Solution:

Set: Xiaoqiang's ticket for Tumbling Tong's father is X yuan. From the meaning of the title:

Shantan 30-20) x = 165 x = 1100 Answer: Xiao Qiang's dad is 1100 yuan for Gao Dad's air ticket. Hope!

1.(1) x, (2x) to the third power (2) x, a to the fourth power (3) x, (2a to the fifth power) to the second power = 4a to the 10th power (4) x, (-m to the second power) = -m to the sixth power.

2.(1) 2x to the fourth power, (2) x to the third power to the sixth power y (3) 2 to the power of the power * 10 to the 10th power (4) 9 * a to the sixth power.

3.2a quadratic -xy quadratic 4*1/4 1 25-a to the ninth power, b to the fourth power, -4x to the sixth power, 8 (a-b) to the sixth power, -2x to the fourth power.

6.Approximately equal to the eighth power.

The teacher has already changed, don't worry.