Solve the problem with column equations, and solve problems with column equations.

Let the weight of the eggplant be x kg, then it can be seen from the known conditions: the weight of the cucumber is (2x-3)kg, and the weight of the winter melon is [3(2x-3)+1]kg, and the equation is as follows:

x+（2x-3）+[3(2x-3)+1]=124x+2x+6x-3-9+1=124

9x=135

x = 15 so the weight of the eggplant is 2 15-3 = 27, and the weight of the winter melon is 27 3 + 1 = 82

A: The weight of cucumber is 15kg, the weight of eggplant is 27kg, and the weight of winter melon is 82kg.

Let's say cucumber x kg, eggplant y kg, winter melon z kg.

As can be seen from the question, 1) x+y+z=124

2) x=2y-3

3) z=3x+1

From 2) we can see that 4) y=(x+3) 2=x 2+3 2 is from 1), 3), 4) we can know.

x+x/2+3/2+3x+1=124

9 2x=124-5 2=(124 2-5) 2x=27, so y=(27+3) 2=15

z=27×3+1=82

So cucumber 27kg, eggplant 15kg, winter melon 82kg

Note: Cucumbers weigh 2 times less than eggplants 3 kg. The weight of the eggplant should be 15 kg, the cucumber 27 kg, and the winter melon 82 kg, and the above two are wrong.

If there are x tickets for B, then there are x+2 tickets for ticket A.

Ticket A is $y, then ticket B is oak price, Liang Yinzi is yuan.

x+2) multiplied by y equals 280

x multiplied equals 300

The solution is x=5 y=40

Therefore, ticket A** is 40 yuan.

1. Solution; Set up a large truck x, a small messy car.

x=45÷（

Solution x=30

Answer: 2, (1).

2) When a = 450, x = 300, 3, solution: set pants x yuan, jacket 2x + 30

x+2x+30=540

x=（540-30）÷3

Solution x=170

Answer; 4. Solution: Let the mass of pears be x kilograms, and the mass of apples and oranges is 3x-11x+3x-11+3x-11=860

x=（540+22）÷7

The solution is x=126

Answer: 5. Solution: If the difference is x, then the subtraction is 2x, and the subtraction is 3xx+2x+3x=258

x=258÷6

Solution x=43

Answer: Dig where.

If the number of white balls before the destruction is x, then the number of red balls is (3x+2), after y times, there are 3 white balls left in the box, and 53 red balls are x-7y=3

3x+2-15y=53

So x=52, y=7

Solution: Let Xiao Ming walk x meters per minute. According to the title:

960-10x=360

Solution: x=60

Answer: Xiao Ming walks 60 meters per minute. (Please adopt, thank you).

1. There are x large trucks, and there are small cars.

x=30 i.e.: if there are 30 large trucks, there are small cars.

2. (1) Left: yuan).

2) Left: Yuan).

3. Set pants per piece x thousand yuan, then the jacket per piece 2x + 30 (yuan) x + 2x + 30 = 540

3x=510

x = 170 that is: pants are 170 thousand yuan per piece, then the jacket is 2 170 + 30 = 370 (yuan) 4, with pears x kg, then the apple core orange has 3x-11 (kg) x + 2 (3x-11) = 860

x+6x-22=860

7x=882

x = 126 i.e., if there are 126 kg of pears, then the apple core and orange each have 3 126-11 = 367 (kg) set the difference to x, then the minus is 2x, and the minus is x+2x=3xx+2x+3x=258

6x=258

x=43 i.e., if the difference is 43, the minus is 2 43 = 86, and the subtraction is 3 43 = 129

1. Solution; Set up large trucks x, small cars.

x=45÷（

Solution x=30

Answer: 2, (1).

2) When a = 450, x = 300, 3, solution: set pants x yuan, jacket 2x + 30

x+2x+30=540

x=（540-30）÷3

Solution x=170

Answer; 4. Solution: Let the mass of pears be x kilograms, and the mass of apples and oranges is 3x-11x+3x-11+3x-11=860

x=（540+22）÷7

The solution is x=126

Answer: 5. Solution: If the difference is x, then the subtraction is 2x, and the subtraction is 3xx+2x+3x=258

x=258÷6

Solution x=43A:

Solution: Let Mom and Xiao Ran be X and Y years old respectively, and the list is as follows according to the title:

x+y=40

x-4=7(y-4)

Joint solution of binary systems of equations.

Get x = 32 (years).

y=8 (years).

A: Mom and Ran are now 32 and 8 years old respectively.

Solution: If Xiao Ran is x years old this year, then my mother is (40-x) years old this year, then:

x-4)*7=40-x-4

7x-28=36-x

8x=64x=8, that is, Xiao Ran is 8 years old this year, so mom is (40-x)=40-8=32 years old this year

Let Xiao Ran's age be x years old.

Xiao Ran's mother is y years old.

x+y=40①

7(x-4)=y-4 , y=7x-24 1,2, combined x+7x-24=40

8x = 64x = 8 years old.

y=32 years.

Solution: If a pencil buys x, then a pencil buys (20-x) by the title.

solution, x=10

then 20-x=10

A: I bought 10 pencils for each of the two pencils.

1.Let the number of Zen friends be x

x/5-x/6=60

x/30=60

x=60*30

x=1800

2.Let Wang raid state A as x

2x 3=80*3 Trap 4

2x/3=60

x=60*3/2

x=90