Question

3) {4х-3y= 0, {3х+2y=17;4) {5х-4y= 0, {2,5х-2y =1.​ Смотреть ответ kovtunkristina012011 kovtunkristina012011 Відповідь: Пояснення: 5x-4y=0. 5x/2-2y=1 x=4y/5 20y/2-2y=1 8y=1 - y=1/8. x=4*1/8:5=1/2*1/5=1/10 ------------------------ 3x-4y=-4 3x-4y=7 x=(4y-4)/3 (3(4y-4)/3-4y=7 4y-4-4y=7 ☞∅

Answer 1

I apologize, but it seems there are some mistakes in the equations and calculations provided. Let's go through each system of equations and solve them correctly.

1. {4x - 3y = 0 {3x + 2y = 17

To solve this system, we can use the method of substitution or elimination. Let's use the elimination method:

Multiply the first equation by 2 and the second equation by 3 to eliminate the y term: {8x - 6y = 0 {9x + 6y = 51

Now, add the two equations together: (8x - 6y) + (9x + 6y) = 0 + 51 8x + 9x = 51 17x = 51 x = 51/17 x = 3

Substitute the value of x back into either of the original equations to solve for y. Let's use the first equation: 4(3) - 3y = 0 12 - 3y = 0 -3y = -12 y = -12/-3 y = 4

Therefore, the solution to the first system of equations is x = 3 and y = 4.

2. {5x - 4y = 0 {2.5x - 2y = 1

It seems there is a typo in the second equation. Assuming you meant 2.5x instead of 2, let's solve it:

Multiply the second equation by 2 to eliminate the decimals: {5x - 4y = 0 {5x - 4y = 2

The two equations are the same, which means they represent the same line. This system has infinitely many solutions. Any values of x and y that satisfy the equation of the line will be a solution.

Please let me know if you have any further questions or if there's anything else I can assist you with!