These do this, how do these things

1) If there are x tricycles, then there are (10-x) bicycles.

3（10-x)+2x=26

30-3x+2x=26

x=-4x=4

There are 6 cyclists and 4 tricycles.

2) If there are x people who donate 5 yuan, then there are (55-x) people who donate 2 yuan.

5x+2（55-x)=185

5x+110-2x=185

3x=75x=25

There were 30 who donated two yuan and 25 who donated five yuan.

3) If there are x people in singles, then there are (42-x) people in doubles.

42-x)÷4+x÷2=15

42-x+2x)÷4=15

42+x=60

x=1818 2=9 (table).

24 4 = 6 (table).

There are 9 tables for singles and 6 tables for doubles.

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Solution: There are x bicycles, according to the meaning of the question, 2x+3*(10-x)=26, and this formula is x=4, so there are 4 bicycles and 6 tricycles.

Solution: There are x people donating 2 yuan, according to the meaning of the title can get 2x + 5 * (55-x) = 185, solve this formula to get x = 30, so 30 people donate 2 yuan, 25 people donate 5 yuan.

Solution: Solution: There are x tables for singles, according to the meaning of the question, 2x+4*(15-x)=42, and this formula is solved to get x=9, so there are 9 tables in singles and 6 in doubles.

1.Set up x bicycles and y tricycles.

x+y=10

2x+3y=26

The solution yields x=4 y=6

That is, 4 bicycles and 6 tricycles.

2.The person who donates 2 yuan is X person and the person Y who donates 5 yuan.

x+y=55

2x+5y=185

x=30 y=25

That is, 30 people who donated 2 yuan and 25 people who donated 5 yuan.

3.There are x tables for singles and y tables for doubles.

x+y=15

2x+4y=42

x=9 y=6

That is, 9 tables in singles and 6 tables in doubles.

1. 4 bicycles and 6 tricycles.

2. There are 30 people who donated 2 yuan and 25 people who donated 5 yuan.

3. 9 singles tables and 6 doubles tables.

7 and 3 of the Masters of the Sasari, the Sassar of the Sassar.

It's that simple! Solve with equations.

Darkness Chen Cang carries a set on his back.

The spirit is (full), the whole mind is (through) attention, (stubborn) strong and unyielding, meticulous (reckless), concentrated, hangs the head (mourning), sacrifices (self) to save others, listlessness (picking), interest (high) (high), regards death as (home), (concentrates) concentrated, and does not care (body). Describe the demeanor of the character: full of energy, full of attention, high spirits, depressed, concentrated.

Praise the spiritual qualities of the characters: sacrificing oneself to save others, treating death as home, and fighting for oneself. Describe the characters who are diligent and hardworking:

Attentive and meticulous. 1. The teacher is like a gardener, who cultivates the growth of these flowers with his heart. 2. Naughty birds keep beating on the branches.

3.Solution: There are x bicycles and y tricycles.

x+y=10 （1）

2x+3y=26 （2）

With 2-1x+2y=16 (3).

With 3-1y=6

Replace y=6 with 1

x=4so.

x=4y=6

So there are 4 bicycles and 6 tricycles.

Do your homework yourself, otherwise you will go to school.

23/100 = 37/1000 = The middle one is 169/50, 169/50 =

*3=30pcs.

30-26 = 4 cars.

10-4 = 6 cars.

A: 6 tricycles and 4 bicycles.

2=110 yuan.

185-110 = 75 yuan.

75 (5-2) = 25 people.

55-25 = 30 people.

A: 30 people donated 2 yuan, and 25 people donated 5 yuan.

2 = 30 people.

42-30 = 12 people.

12 (4-2) = 6 units.

15-6=9 units.

A: 9 in singles and 6 in doubles.

Let the number of bicycles be x and the number of tricycles be y.

x+y=10

2x+3y=26 x=4 y=6 Answer: The number of bicycles is 4 and the number of tricycles is 6.

How many people donate 2 yuan, and there are y people who donate 5 yuan.

x+y=55

2x+5y=185 x=30 y=25 There are x table tennis tables for singles and y for doubles.

x+y=15

2x+4y=42 The solution yields x=9 y=6

(1) X bicycles, Y tricycles.

x+y=10

2x+3y=26

The solution is x=4 and y=6

4 bicycles and 6 tricycles.

2) There are x people who donate 2 yuan, and there are y people who donate 5 yuan.

x+y=55

2x+5y=185

The solution yields x=30 and y=25

There were 30 people who donated 2 yuan, and 25 people who donated 5 yuan.

3) Singles x sheets, doubles Y sheets.

x+y=15

2x+4y=42

The solution yields x=9 and y=6

Let the bicycle be x

2x+3（10-x）=26

2x+30-3x=26

x = 4 bicycles, 4 tricycles, 6 tricycles.

Let the two-dimensional one be x

2x+5（55-x）=185

2x+275-5x=185

x=30 for 20 yuan and 25 for 5 yuan.

(3) Solution: Let the bicycle be x and the tricycle be y

x+y=10 1 formula.

2x+3y=26 2 formula.

1 is obedient to 2, and the last two formulas are subtracted to y=6 x=4

4) Set up a donation of 2 yuan for x and donate 5 yuan for y

x +y=55

2x+5y=185

The solution yields x=30 and y=25

5) Set x for singles and y for doubles

x+y=15

2x+4y=42

The solution yields x=9 and y=6

1: Solution: Let there be x bicycles and (10-x) tricycles 2x+3(10-x)=26

2x-3x=26-30

x=410-4=6 cars.

2: Solution: There are x people who donate 2 yuan, and there are (55-x) people who donate 5 yuan 2x+5(55-x)=185

2x-5x=185-275

x=3055-30=25 people.

3: Solution: Let singles have x sets, doubles have (15-x) sets 2x+4(15-x)=42

2x-4x=42-60

x=915-9=6 units.

There are x bicycles and Y tricycles.

x+y=10 x=4

2x+3y=26 y=6

4 bicycles, 6 tricycles, 30 2 yuan, 25 5 yuan, 6 doubles, 9 singles.

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