Solve this problem with a system of binary equations

If you win x games and draw y games, you lose (4-x-y) games. 3x+1y+0(4-x-y)=6 3x+y=6 y=6-3x When x=0, y-=6-3 0=6 (rounded) When x=1, y=6-3 1=3. When x=2, y=6-3 2=0 When x=3, y=6-3 3=-39 (rounded) So draw 2 games, win 1 game or win 2 games, draw 0 games.

Won one, drew three.

3x+y=6

x+y+z=4

So. x=1,y=3,z=0

x=2,y=0,z=2

That is, one win, three draws, no loss.

Or win two games and lose two games.

Solve won x games, drew y games, and lost (4 x y) games.

x＋y＋（4－x－y）＝4

3x＋y＝6

x=1, y=3, minus 0

x=2, y=0, minus 2

Solution: Because you score 6 points in 4 games, you can win 2 games at most.

If you win 2 games, you will draw 0 and lose 2.

If you win 1 match, you have 3 draws and 0 losses.

If you win 0 games, you will get a maximum of 4 points.

A: 1 win, 3 draws, 0 losses.

or won 2 games, drew 0 and lost 2 games.

Solve won x games, drew y games, and lost (4 x y) games.

Derive a system of equations.

x＋y＋（4－x－y）＝4

3x＋y＝6

Solution: x=1, y=3, minus 0

x=2, y=0, minus 2ok

1.Set A to run x laps per minute. B runs y laps per minute. The total length of the ring road s is s=2*(x+y)=6*(x-y).

It is available, x=1 3s, y=1 6s

2.Let the stiffness coefficient be x, and the original length is y, {2*x=

5*x=You can solve it.

Let the velocity of A be x and B be y

The first equation 9 5x+9 5y=18 [9 5 represents nine-fifths] and the second equation 2 3x+3 2x+3 2y=18 gives x=9 2

y=11/2

Solution: Set x cubic meters for the stool surface and Y cubic meters for the legs.

x+y=93×50x=300y

Solution: x=6, y=3

The number of round stools produced = the number of stools = 6 50 = 300

A: With 6 cubic meters of wood for the bench surface and 3 cubic meters of wood for the legs, can you produce up to 300 round stools?

Solution: Set x cubic meters to make the stool legs, and Y cubic meters to make the stool surface.

Equation 1: x+y=9

Equation 2: 3 (50y) = 300x (one bench with 3 legs) solves the equation system as x=3, y=6

1. Set up male x people and female y people.

then x=2y-2

x+y=246

The solution is not an integer for x,y, so there may be a problem with the problem.

2. Set to x and y respectively

x+y=22

60x+80y=1600

The solution is x=8 y=14

3. Set x and y respectively

2x+5y)*2=36

3x+2y)*5=80

The solution is x=4 y=2

1. There are x girls and y boys. The equation {x+y=246 y=2x-2} is solved x= y= (maybe the number is wrong, because the number of people cannot be integer).

2.There are x stamps of 60 cents and y stamps of 80 cents. Equation {x+y=22 is solved to x=8 y=14

3.Set up a large truck to carry x tons of garbage and a small truck to transport y tons of garbage. The equation {4x+10y=36 15x+10y=80} gives x=4 y=2

1. Boys = x, girls = y

x+y=246

x=2y-2

The number is not quite right, and the result is not an integer.

2. Set 60 cents of stamps x, 80 cents of stamps y, 16 yuan = 1600 points.

x+y=22

60x+80y=1600

x=8，y=14

3. Set up 1 large truck to transport x tons of garbage per hour, and 1 small truck to transport y tons of garbage per hour.

2x+5y=36/2

3x+2y=80/5

x=4，y=2

1. There are x boys and y girls.

x+y=246 x+2=2y

It doesn't seem to be open...

2. Set up to buy x sheets for 60 points and y sheets for 80 points.

x+y=22

The solution is x=8 y=14

3. Set up large trucks to transport x tons of h, and small trucks to transport y tons of h.

2x+5y) 2=36 (3x+2y) 5=80 The solution is x=4 y=2

1. Solution: Let the distance between point A and Beishan Station be x, and the distance of the car returning from point A is Y2X+Y=18

2y+x）/60=x/4

The solution is x=2 y=14

A: The distance between point A and Kitayama Station is 2 km.

2. Solution: Let the last five digits of the original six-digit number be x and the new six-digit number is y10x+1=y

y=3*（100000+x）

The solution is x=42857 y=428571

The original six-digit number is 142857

A: The original six-digit number is 142857

And everybody, everybody, everybody, is near Fol

Programming, it came out at once.

Set the price of color TV to be X yuan, and the price of washing machine to be Y yuan, which is based on the title:

x-y = 1000, 13%x + 13%y = 390, solve the above binary system of linear equations, and get:

x=2000,y=1000,So,The price of color TV is2000element,The price of washing machine is1000element,I hope it can help you,If you don't understand, you can ask

Analysis: The price of the color TV - the price of the washing machine = 1000 yuan, (the price of the washing machine + the price of the color TV) 13% = 390 yuan According to the two equal quantities off the series of equations

Answer: Solution: The price of a color TV is X yuan, and the price of a washing machine is Y yuan According to the question: x-y=100013%.

x+y)=390

Solution: x=2000

y=1000

Answer: The price of color TV and washing machine is 2000, 1000 yuan respectively

Set the price of color TV to be X, and the price of washing machine to be Y

x+y=390/13%

x-y=1000

After calculation, the price of color TV is 2000 yuan, and the price of washing machine is 1000 yuan.

"Yi Qinying.

Come to "Hello, glad to answer for you!

1) Solution: Set the first modification of x car, after the modification of fuel consumption y yuan xy 80 (100-x) = 3 20

2xy/80(100-2x)=2/5

Solving the system of equations yields x=20, y=48

A: The company has modified a total of 20 vehicles, and the average daily fuel cost of each taxi after the modification is 40% lower than the fuel cost before the modification. (2) Solution:

After full conversion, 100 4000 100 (80-48) = 125 days will pay for itself in the fuel cost saved.

A: The cost of fuel savings can be recouped after 125 days.

(1) Solution: bai

Set up the first modified Dux car.

Fuel consumption after modification.

xy÷80(100-x)=3/20

2xy/80(100-2x)=2/5

Solving the system of equations yields x=20, y=48

A: The company's DAO has converted a total of 20 vehicles, and the average daily fuel cost per taxi after the modification is 40% lower than the fuel cost before the modification. (2) Solution:

After full conversion, 100 4000 100 (80-48) = 125 days will pay for itself in the fuel cost saved.

A: The cost of fuel savings can be recouped after 125 days.

If you want to cheat, I'm your teacher, go back and do it yourself.

Solution: Set up x small tents and y large tents.

According to the title, it gets: {3x+10y=1800

150x+400y=75000

The solution is x=100 and y=150

2): If M is A, then B (12-M).

According to the title, it gets: {15m+6(12-m) 100{16(12-m)+8m 150

Solving this inequality yields: 28 9 m 4

m is a positive integer, 3 m 4

There are two options.

One: three car A, nine car B.

Two: four A, eight B.

Answer.