Question

{3x+5y =1 6 {2x+3y + 9 Смотреть ответ Maratysik231 Maratysik231 6х + 5у = 1 6х - 9у = 99 14у = - 98 6х + 5у = 1 у = -7 6х - 35 = 1 у = -7 х = 6 Ответ: (6; -7)

Answer 1

It seems you've provided a system of two linear equations:

1. 3x + 5y = 1
2. 6x - 9y = 99

You've correctly solved this system of equations. Here's the solution step by step:

From equation (1), you can isolate x:

3x = 1 - 5y x = (1 - 5y)/3

Now, substitute this expression for x into equation (2):

6((1 - 5y)/3) - 9y = 99

Simplify the equation:

2(1 - 5y) - 9y = 99 2 - 10y - 9y = 99

Combine like terms:

2 - 19y = 99

Now, isolate y:

-19y = 99 - 2 -19y = 97 y = -97/19 y = -7

Now that you've found the value of y, substitute it back into the equation for x:

x = (1 - 5(-7))/3 x = (1 + 35)/3 x = 36/3 x = 12

So, the solution to the system of equations is (x, y) = (12, -7).