Question

1) х-3у+5 =0 2)-2х+у-7=0​

Answer 1

Ответ:X=3y-5.

Пошаговое объяснение:

X=3y-5.

-2x= -y+7

X= -y+7 / -2

Answer 2

Как-то так, у меня получилось

Answer 3

To solve the system of equations, you can use either the substitution method or the elimination method. I'll demonstrate how to use the elimination method:

Given the system of equations:

1. х - 3у + 5 = 0
2. -2х + у - 7 = 0

Step 1: Eliminate one variable by adding the two equations together. To do this, make sure the coefficients of one of the variables are the same in both equations, but with opposite signs. In this case, we'll eliminate "x."

Multiply equation (1) by 2 to make the x coefficients opposite: 2(x - 3y + 5) = 0 => 2x - 6y + 10 = 0

Now add equation (2) and the modified equation (1) together: -2x + y - 7 + 2x - 6y + 10 = 0 => -5y + 3 = 0

Step 2: Solve for "y": -5y = -3 => y = 3/5

Step 3: Substitute the value of "y" back into either of the original equations to solve for "x." Let's use equation (1):

x - 3(3/5) + 5 = 0 x - 9/5 + 5 = 0 x = 9/5 - 5 x = 9/5 - 25/5 x = (9 - 25)/5 x = -16/5

So, the solution to the system of equations is: x = -16/5 y = 3/5